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DNS & WHOIS Domain Lookup

payment-readyonlineimported

payment-ready until 2026-10-26

imported from the x402 Bazaar, not submitted by the operator · own this service? claim it · or ask to be removed

Pay-per-call DNS and domain lookup API with six endpoints: A, TXT and MX records, WHOIS text, parsed RDAP registration data and DNSSEC status, all returned as structured JSON.

Part of the x402 Atlas operator hub

Call it x402 v2

x402 v2

Base URL
https://dns.use.x402atlas.com
Payment
x402 v2, header channel
$ curl -i 'https://dns.use.x402atlas.com/a'

An unpaid request returns HTTP 402 with the payment terms. Sign a payment authorization, then retry with the PAYMENT-SIGNATURE header.

Endpoints 6 paid routes on dns.use.x402atlas.com

GET/aArbitrum One+Base+Pol+Sol$0.005since 07-20
GET/dnssecArbitrum One+Base+Pol+Sol$0.005since 07-20
GET/mxArbitrum One+Base+Pol+Sol$0.005since 07-20
GET/rdapArbitrum One+Base+Pol+Sol$0.005since 07-20
GET/txtArbitrum One+Base+Pol+Sol$0.005since 07-20
GET/whoisArbitrum One+Base+Pol+Sol$0.01since 07-20

Prices as captured in the 402 response: median $0.005 across the 6 endpoints.

Example 402 response

Endpoints and prices

Current paid endpoints; minimum quoted prices in USD where available; first capture dates in UTC
MethodPathDescriptionPriceNetworkAsset402 channelCaptured
GET/aDNS A record lookup · resolve any hostname or domain to its IPv4 addresses, returned as a clean JSON list. For host resolution, connectivity and uptime checks, IP-reputation enrichment and infrastructure mapping.$0.005Arbitrum One+Base+Pol+SolUSDC, USD Coinheadersince 07-20
GET/dnssecDNSSEC health check: reports whether a domain is DNSSEC-signed (DNSKEY), has a DS record at the parent, and whether the resolver authenticated the answer, with advisory warnings.$0.005Arbitrum One+Base+Pol+SolUSDC, USD Coinheadersince 07-20
GET/mxDNS MX record lookup · a domain's mail servers with their hostnames and priorities as structured JSON, for email routing, deliverability diagnostics and mail-provider detection.$0.005Arbitrum One+Base+Pol+SolUSDC, USD Coinheadersince 07-20
GET/rdapRDAP domain registration lookup: structured registrar, creation/updated/expiry dates, status, nameservers and a computed domain age. A parsed, snake_case JSON alternative to raw WHOIS text.$0.005Arbitrum One+Base+Pol+SolUSDC, USD Coinheadersince 07-20
GET/txtDNS TXT record lookup · a domain's TXT records as a clean JSON list: SPF, DKIM and DMARC policy strings plus site-verification and domain-ownership tokens, for email-authentication and domain-verification checks.$0.005Arbitrum One+Base+Pol+SolUSDC, USD Coinheadersince 07-20
GET/whoisWHOIS domain lookup · raw registry text with registrar, nameservers, lifecycle dates and status, plus the responding server. Use the RDAP endpoint when you need parsed structured data.$0.01Arbitrum One+Base+Pol+SolUSDC, USD Coinheadersince 07-20

Payment evidence

402 payload captured at . Check evidence JSON · Measurement methodology.

First of 6 payloads captured by the monitor.

231 lines, scroll inside

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "tier": "standard",
        "version": "2",
        "merchant": "x402Atlas"
      },
      "payTo": "0x446e51DeAb3aE656C99E65369e8eF1148d23d7f7",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
      "extra": {
        "name": "USD Coin",
        "tier": "standard",
        "version": "2",
        "merchant": "x402Atlas"
      },
      "payTo": "0x446e51DeAb3aE656C99E65369e8eF1148d23d7f7",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:137",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
      "extra": {
        "name": "USD Coin",
        "tier": "standard",
        "version": "2",
        "merchant": "x402Atlas"
      },
      "payTo": "0x446e51DeAb3aE656C99E65369e8eF1148d23d7f7",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:42161",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "tier": "standard",
        "feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F",
        "merchant": "x402Atlas"
      },
      "payTo": "ASt6xvRyQ7ntERsmcYVMdLqZvz1GEN8Fzexzq62tXrNQ",
      "amount": "5000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://dns.use.x402atlas.com/rdap",
    "tags": [
      "rdap",
      "whois",
      "domain",
      "registration",
      "registrar",
      "domain-age",
      "fraud"
    ],
    "mimeType": "application/json",
    "description": "RDAP domain registration lookup: structured registrar, creation/updated/expiry dates, status, nameservers and a computed domain age. A parsed, snake_case JSON alternative to raw WHOIS text.",
    "serviceName": "RDAP Domain Registration"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "domain": "example.com"
          }
        },
        "output": {
          "type": "json",
          "example": {
            "domain": "example.com",
            "status": [
              "client delete prohibited"
            ],
            "created": "1995-08-14T04:00:00Z",
            "updated": "2023-08-14T07:01:44Z",
            "registrar": "RESERVED-Internet Assigned Numbers Authority",
            "expiration": "2024-08-13T04:00:00Z",
            "queried_at": "2026-06-05T12:00:00Z",
            "nameservers": [
              "a.iana-servers.net",
              "b.iana-servers.net"
            ],
            "domain_age_days": 11000
          }
        }
      },
      "tags": [
        "rdap",
        "whois",
        "domain",
        "registration",
        "registrar",
        "domain-age",
        "fraud"
      ],
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method"
            ],
            "properties": {
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "GET"
                ],
                "type": "string"
              },
              "queryParams": {
                "type": "object",
                "required": [
                  "domain"
                ],
                "properties": {
                  "domain": {
                    "type": "string",
                    "maxLength": 253,
                    "minLength": 1,
                    "description": "Bare domain to look up via RDAP (not an IP literal, not localhost, not under a reserved suffix like .local/.internal)"
                  }
                }
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "domain",
                  "registrar",
                  "created",
                  "updated",
                  "expiration",
                  "status",
                  "nameservers",
                  "domain_age_days",
                  "queried_at"
                ],
                "properties": {
                  "domain": {
                    "type": "string",
                    "description": "The queried domain"
                  },
                  "status": {
                    "type": "array",
                    "items": {
                      "type": "string"
                    },
                    "description": "EPP domain status codes"
                  },
                  "created": {
                    "type": "string",
                    "description": "Registration date (RFC3339); empty string if unavailable"
                  },
                  "updated": {
                    "type": "string",
                    "description": "Last-changed date (RFC3339); empty string if unavailable"
                  },
                  "registrar": {
                    "type": "string",
                    "description": "Registrar name; empty string if the registry omits it"
                  },
                  "expiration": {
                    "type": "string",
                    "description": "Expiration date (RFC3339); empty string if unavailable"
                  },
                  "queried_at": {
                    "type": "string",
                    "format": "date-time",
                    "description": "UTC timestamp of the lookup"
                  },
                  "nameservers": {
                    "type": "array",
                    "items": {
                      "type": "string"
                    },
                    "description": "Authoritative nameserver hostnames"
                  },
                  "domain_age_days": {
                    "type": "integer",
                    "description": "Whole days since registration; 0 when the registration date is missing or unparseable"
                  }
                }
              }
            }
          }
        }
      },
      "category": "domain-intelligence"
    }
  },
  "x402Version": 2
}
Other captured 402 responses (5)

Captured payload 2 of 6

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "tier": "standard",
        "version": "2",
        "merchant": "x402Atlas"
      },
      "payTo": "0x446e51DeAb3aE656C99E65369e8eF1148d23d7f7",
      "amount": "10000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
      "extra": {
        "name": "USD Coin",
        "tier": "standard",
        "version": "2",
        "merchant": "x402Atlas"
      },
      "payTo": "0x446e51DeAb3aE656C99E65369e8eF1148d23d7f7",
      "amount": "10000",
      "scheme": "exact",
      "network": "eip155:137",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
      "extra": {
        "name": "USD Coin",
        "tier": "standard",
        "version": "2",
        "merchant": "x402Atlas"
      },
      "payTo": "0x446e51DeAb3aE656C99E65369e8eF1148d23d7f7",
      "amount": "10000",
      "scheme": "exact",
      "network": "eip155:42161",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "tier": "standard",
        "feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F",
        "merchant": "x402Atlas"
      },
      "payTo": "ASt6xvRyQ7ntERsmcYVMdLqZvz1GEN8Fzexzq62tXrNQ",
      "amount": "10000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://dns.use.x402atlas.com/whois",
    "tags": [
      "whois",
      "domain",
      "registrar",
      "nameservers",
      "expiry",
      "rdap",
      "lookup"
    ],
    "mimeType": "application/json",
    "description": "WHOIS domain lookup — raw registry text with registrar, nameservers, lifecycle dates and status, plus the responding server. Use the RDAP endpoint when you need parsed structured data.",
    "serviceName": "WHOIS Domain Lookup"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "domain": "example.com"
          }
        },
        "output": {
          "type": "json",
          "example": {
            "raw": "Domain Name: EXAMPLE.COM\n...",
            "domain": "example.com",
            "server": "whois.verisign-grs.com",
            "queried_at": "2026-06-05T12:00:00Z"
          }
        }
      },
      "tags": [
        "whois",
        "domain",
        "registrar",
        "nameservers",
        "expiry",
        "rdap",
        "lookup"
      ],
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method"
            ],
            "properties": {
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "GET"
                ],
                "type": "string"
              },
              "queryParams": {
                "type": "object",
                "required": [
                  "domain"
                ],
                "properties": {
                  "domain": {
                    "type": "string",
                    "maxLength": 253,
                    "minLength": 1,
                    "description": "Bare domain to query (not an IP literal, not localhost, not under a reserved suffix like .local/.internal)"
                  }
                }
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "domain",
                  "server",
                  "raw",
                  "queried_at"
                ],
                "properties": {
                  "raw": {
                    "type": "string",
                    "description": "Unparsed WHOIS response text; format varies per TLD"
                  },
                  "domain": {
                    "type": "string",
                    "description": "The queried domain"
                  },
                  "server": {
                    "type": "string",
                    "description": "Authoritative WHOIS host whose raw text was returned (IANA if no referral)"
                  },
                  "queried_at": {
                    "type": "string",
                    "format": "date-time",
                    "description": "UTC timestamp of the lookup"
                  }
                }
              }
            }
          }
        }
      },
      "category": "domain-intelligence"
    }
  },
  "x402Version": 2
}

Captured payload 3 of 6

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "tier": "standard",
        "version": "2",
        "merchant": "x402Atlas"
      },
      "payTo": "0x446e51DeAb3aE656C99E65369e8eF1148d23d7f7",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
      "extra": {
        "name": "USD Coin",
        "tier": "standard",
        "version": "2",
        "merchant": "x402Atlas"
      },
      "payTo": "0x446e51DeAb3aE656C99E65369e8eF1148d23d7f7",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:137",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
      "extra": {
        "name": "USD Coin",
        "tier": "standard",
        "version": "2",
        "merchant": "x402Atlas"
      },
      "payTo": "0x446e51DeAb3aE656C99E65369e8eF1148d23d7f7",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:42161",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "tier": "standard",
        "feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F",
        "merchant": "x402Atlas"
      },
      "payTo": "ASt6xvRyQ7ntERsmcYVMdLqZvz1GEN8Fzexzq62tXrNQ",
      "amount": "5000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://dns.use.x402atlas.com/dnssec",
    "tags": [
      "dnssec",
      "dns",
      "security",
      "dnskey",
      "ds",
      "validation"
    ],
    "mimeType": "application/json",
    "description": "DNSSEC health check: reports whether a domain is DNSSEC-signed (DNSKEY), has a DS record at the parent, and whether the resolver authenticated the answer, with advisory warnings.",
    "serviceName": "DNSSEC Health Check"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "domain": "example.com"
          }
        },
        "output": {
          "type": "json",
          "example": {
            "domain": "cloudflare.com",
            "has_ds": true,
            "warnings": [],
            "queried_at": "2026-06-05T12:00:00Z",
            "authenticated": true,
            "dnssec_enabled": true
          }
        }
      },
      "tags": [
        "dnssec",
        "dns",
        "security",
        "dnskey",
        "ds",
        "validation"
      ],
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method"
            ],
            "properties": {
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "GET"
                ],
                "type": "string"
              },
              "queryParams": {
                "type": "object",
                "required": [
                  "domain"
                ],
                "properties": {
                  "domain": {
                    "type": "string",
                    "maxLength": 253,
                    "minLength": 1,
                    "description": "Bare domain to check for DNSSEC signing (not an IP literal, not localhost, not under a reserved suffix like .local/.internal)"
                  }
                }
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "domain",
                  "dnssec_enabled",
                  "has_ds",
                  "authenticated",
                  "warnings",
                  "queried_at"
                ],
                "properties": {
                  "domain": {
                    "type": "string",
                    "description": "The queried domain"
                  },
                  "has_ds": {
                    "type": "boolean",
                    "description": "True when the parent zone publishes a DS record"
                  },
                  "warnings": {
                    "type": "array",
                    "items": {
                      "type": "string"
                    },
                    "description": "Advisory posture warnings; never affects the status code"
                  },
                  "queried_at": {
                    "type": "string",
                    "format": "date-time",
                    "description": "UTC timestamp of the check"
                  },
                  "authenticated": {
                    "type": "boolean",
                    "description": "True when the resolver set the DoH AD (Authenticated Data) flag"
                  },
                  "dnssec_enabled": {
                    "type": "boolean",
                    "description": "True when a DNSKEY record is present"
                  }
                }
              }
            }
          }
        }
      },
      "category": "domain-intelligence"
    }
  },
  "x402Version": 2
}

Captured payload 4 of 6

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "tier": "standard",
        "version": "2",
        "merchant": "x402Atlas"
      },
      "payTo": "0x446e51DeAb3aE656C99E65369e8eF1148d23d7f7",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
      "extra": {
        "name": "USD Coin",
        "tier": "standard",
        "version": "2",
        "merchant": "x402Atlas"
      },
      "payTo": "0x446e51DeAb3aE656C99E65369e8eF1148d23d7f7",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:137",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
      "extra": {
        "name": "USD Coin",
        "tier": "standard",
        "version": "2",
        "merchant": "x402Atlas"
      },
      "payTo": "0x446e51DeAb3aE656C99E65369e8eF1148d23d7f7",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:42161",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "tier": "standard",
        "feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F",
        "merchant": "x402Atlas"
      },
      "payTo": "ASt6xvRyQ7ntERsmcYVMdLqZvz1GEN8Fzexzq62tXrNQ",
      "amount": "5000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://dns.use.x402atlas.com/a",
    "tags": [
      "dns",
      "a-record",
      "ipv4",
      "resolve",
      "hostname",
      "domain",
      "lookup"
    ],
    "mimeType": "application/json",
    "description": "DNS A record lookup — resolve any hostname or domain to its IPv4 addresses, returned as a clean JSON list. For host resolution, connectivity and uptime checks, IP-reputation enrichment and infrastructure mapping.",
    "serviceName": "DNS A Record Lookup"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "host": "example.com"
          }
        },
        "output": {
          "type": "json",
          "example": {
            "host": "example.com",
            "records": [
              "93.184.216.34"
            ],
            "queried_at": "2026-06-05T12:00:00Z"
          }
        }
      },
      "tags": [
        "dns",
        "a-record",
        "ipv4",
        "resolve",
        "hostname",
        "domain",
        "lookup"
      ],
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method"
            ],
            "properties": {
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "GET"
                ],
                "type": "string"
              },
              "queryParams": {
                "type": "object",
                "required": [
                  "host"
                ],
                "properties": {
                  "host": {
                    "type": "string",
                    "maxLength": 253,
                    "minLength": 1,
                    "description": "Bare hostname to resolve (not an IP literal, not localhost, not under a reserved suffix like .local/.internal)"
                  }
                }
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "host",
                  "records",
                  "queried_at"
                ],
                "properties": {
                  "host": {
                    "type": "string",
                    "description": "The queried hostname"
                  },
                  "records": {
                    "type": "array",
                    "items": {
                      "type": "string"
                    },
                    "description": "IPv4 addresses (A records)"
                  },
                  "queried_at": {
                    "type": "string",
                    "format": "date-time",
                    "description": "UTC timestamp of the lookup"
                  }
                }
              }
            }
          }
        }
      },
      "category": "domain-intelligence"
    }
  },
  "x402Version": 2
}

Captured payload 5 of 6

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "tier": "standard",
        "version": "2",
        "merchant": "x402Atlas"
      },
      "payTo": "0x446e51DeAb3aE656C99E65369e8eF1148d23d7f7",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
      "extra": {
        "name": "USD Coin",
        "tier": "standard",
        "version": "2",
        "merchant": "x402Atlas"
      },
      "payTo": "0x446e51DeAb3aE656C99E65369e8eF1148d23d7f7",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:137",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
      "extra": {
        "name": "USD Coin",
        "tier": "standard",
        "version": "2",
        "merchant": "x402Atlas"
      },
      "payTo": "0x446e51DeAb3aE656C99E65369e8eF1148d23d7f7",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:42161",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "tier": "standard",
        "feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F",
        "merchant": "x402Atlas"
      },
      "payTo": "ASt6xvRyQ7ntERsmcYVMdLqZvz1GEN8Fzexzq62tXrNQ",
      "amount": "5000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://dns.use.x402atlas.com/mx",
    "tags": [
      "dns",
      "mx",
      "mail-server",
      "email",
      "deliverability",
      "domain",
      "lookup"
    ],
    "mimeType": "application/json",
    "description": "DNS MX record lookup — a domain's mail servers with their hostnames and priorities as structured JSON, for email routing, deliverability diagnostics and mail-provider detection.",
    "serviceName": "DNS MX Record Lookup"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "host": "example.com"
          }
        },
        "output": {
          "type": "json",
          "example": {
            "host": "example.com",
            "records": [
              {
                "host": "mail.example.com.",
                "pref": 10
              }
            ],
            "queried_at": "2026-06-05T12:00:00Z"
          }
        }
      },
      "tags": [
        "dns",
        "mx",
        "mail-server",
        "email",
        "deliverability",
        "domain",
        "lookup"
      ],
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method"
            ],
            "properties": {
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "GET"
                ],
                "type": "string"
              },
              "queryParams": {
                "type": "object",
                "required": [
                  "host"
                ],
                "properties": {
                  "host": {
                    "type": "string",
                    "maxLength": 253,
                    "minLength": 1,
                    "description": "Bare hostname to resolve (not an IP literal, not localhost, not under a reserved suffix like .local/.internal)"
                  }
                }
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "host",
                  "records",
                  "queried_at"
                ],
                "properties": {
                  "host": {
                    "type": "string",
                    "description": "The queried hostname"
                  },
                  "records": {
                    "type": "array",
                    "items": {
                      "type": "object",
                      "required": [
                        "host",
                        "pref"
                      ],
                      "properties": {
                        "host": {
                          "type": "string",
                          "description": "Mail server hostname, typically with a trailing dot"
                        },
                        "pref": {
                          "type": "integer",
                          "description": "MX preference; lower values are tried first"
                        }
                      }
                    }
                  },
                  "queried_at": {
                    "type": "string",
                    "format": "date-time",
                    "description": "UTC timestamp of the lookup"
                  }
                }
              }
            }
          }
        }
      },
      "category": "domain-intelligence"
    }
  },
  "x402Version": 2
}

Captured payload 6 of 6

{
  "error": "Payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "tier": "standard",
        "version": "2",
        "merchant": "x402Atlas"
      },
      "payTo": "0x446e51DeAb3aE656C99E65369e8eF1148d23d7f7",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
      "extra": {
        "name": "USD Coin",
        "tier": "standard",
        "version": "2",
        "merchant": "x402Atlas"
      },
      "payTo": "0x446e51DeAb3aE656C99E65369e8eF1148d23d7f7",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:137",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
      "extra": {
        "name": "USD Coin",
        "tier": "standard",
        "version": "2",
        "merchant": "x402Atlas"
      },
      "payTo": "0x446e51DeAb3aE656C99E65369e8eF1148d23d7f7",
      "amount": "5000",
      "scheme": "exact",
      "network": "eip155:42161",
      "maxTimeoutSeconds": 300
    },
    {
      "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
      "extra": {
        "tier": "standard",
        "feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F",
        "merchant": "x402Atlas"
      },
      "payTo": "ASt6xvRyQ7ntERsmcYVMdLqZvz1GEN8Fzexzq62tXrNQ",
      "amount": "5000",
      "scheme": "exact",
      "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
      "maxTimeoutSeconds": 300
    }
  ],
  "resource": {
    "url": "https://dns.use.x402atlas.com/txt",
    "tags": [
      "dns",
      "txt",
      "spf",
      "dkim",
      "dmarc",
      "domain-verification",
      "email"
    ],
    "mimeType": "application/json",
    "description": "DNS TXT record lookup — a domain's TXT records as a clean JSON list: SPF, DKIM and DMARC policy strings plus site-verification and domain-ownership tokens, for email-authentication and domain-verification checks.",
    "serviceName": "DNS TXT Record Lookup"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "host": "example.com"
          }
        },
        "output": {
          "type": "json",
          "example": {
            "host": "example.com",
            "records": [
              "v=spf1 -all"
            ],
            "queried_at": "2026-06-05T12:00:00Z"
          }
        }
      },
      "tags": [
        "dns",
        "txt",
        "spf",
        "dkim",
        "dmarc",
        "domain-verification",
        "email"
      ],
      "schema": {
        "type": "object",
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object",
            "required": [
              "type",
              "method"
            ],
            "properties": {
              "type": {
                "type": "string",
                "const": "http"
              },
              "method": {
                "enum": [
                  "GET"
                ],
                "type": "string"
              },
              "queryParams": {
                "type": "object",
                "required": [
                  "host"
                ],
                "properties": {
                  "host": {
                    "type": "string",
                    "maxLength": 253,
                    "minLength": 1,
                    "description": "DNS TXT record name, including underscores (e.g. _dmarc.example.com or selector._domainkey.example.com); not an IP literal, localhost, or a name under a reserved suffix like .local/.internal"
                  }
                }
              }
            },
            "additionalProperties": false
          },
          "output": {
            "type": "object",
            "required": [
              "type"
            ],
            "properties": {
              "type": {
                "type": "string"
              },
              "example": {
                "type": "object",
                "required": [
                  "host",
                  "records",
                  "queried_at"
                ],
                "properties": {
                  "host": {
                    "type": "string",
                    "description": "The queried hostname"
                  },
                  "records": {
                    "type": "array",
                    "items": {
                      "type": "string"
                    },
                    "description": "Raw, unparsed TXT record strings (SPF, DKIM, DMARC, verification tokens)"
                  },
                  "queried_at": {
                    "type": "string",
                    "format": "date-time",
                    "description": "UTC timestamp of the lookup"
                  }
                }
              }
            }
          }
        }
      },
      "category": "domain-intelligence"
    }
  },
  "x402Version": 2
}

Can I trust it score from our own monitoring

score from our own monitoring

86/100 Solid

#116 of 386 in Data. Bands: strong 93+, solid 75+, mixed 55+, weak below 55.

Reliability
100% uptime 30d
Compliance
A 14/14 checks pass
Price
$0.005 to $0.01 p42 in Data
Risk
clean no risk flag
Traction
$0.73 30d 35 buyers, top buyer 70% (address, not entity)
Last change
price changed 7d ago 1 in 30d
14/14 compliance checks
  • 402 payload captured
  • accepts[] array present
  • payTo address recoverable
  • payTo at accepts[0].payTo (conformant shape)
  • payTo is a valid on-chain address
  • atomic price declared
  • atomic price in a sane range
  • asset (token) address declared
  • network resolves to CAIP-2
  • payment scheme declared
  • served over HTTPS
  • declares the current x402 version (2)
  • EIP-712 domain parameters present on every EVM entry
  • x402 v2 envelope delivered in the payment-required header

402 terms unchanged since 2026-10-12. Last up 2026-10-19.

── Site signals

  • homepage reachable
  • openapi doc
  • pricing page
  • llms.txt
  • robots.txt
  • terms page
How the score works

What the score read on this service: status online, 100% uptime 30d, 358ms response p95, x402 compliance 14 of 14, $0.005 price against the category, on-chain traction measured. Each of those is measured, and each is published in full below.

The score comes from our own monitoring, never from reviews, operator claims, or a language model: reliability, x402 compliance, price against the category, a deterministic risk flag, and a small on-chain traction term, weighted by ranking generation 3. It is not placement anyone can buy: the paid verify tier is reported beside it and is not one of its inputs. Every component below stays published and read-only.

Bands on the 0 to 100 measured score: strong at 93 and above, solid from 75, mixed from 55, weak below 55. Price and speed are scored against the whole category field, every listing in it that carries no danger flag, the scored service included, so the score places a service in its own field.

It is a score inside Data, and only there: price and speed are scored against the whole category field, every listing in it that carries no danger flag, the scored service included, which here means 386 listings, this one among them: the same 386 the position above is counted against. When the two differ, the field is the wider one, because a listing we have measured too little of to rank still sits in the field the price and the speed are normalized over. The same service in a different field would read differently. The same engine answers GET /api/v1/best, and asked for a different pool (the whole directory, or another filter) it returns a different number for this service under this same ranking generation. Neither is more correct: they answer different questions, and the methodology states which is which.

Settled via coinbase ($4.09, 666 tx). Traction is a conservative undercount; first settlement seen 2026-06-13.

All measured facts

What it does

Pay-per-call DNS and domain lookup API with six endpoints: A, TXT and MX records, WHOIS text, parsed RDAP registration data and DNSSEC status, all returned as structured JSON. Flat $0.005 per call, payable on Base or Solana.

DNS & WHOIS Domain Lookup is a listed x402 Data API. Captured payment terms name Arbitrum One, Base, Polygon, Solana. Monitoring and settlement figures below describe the observations available to this directory; an unpaid HTTP 402 check does not prove that a paid call will deliver.

Assessment computed at . Latest service check observed at . Service data JSON · Measurement methodology.

Page rendered at . This response time is separate from the observation and computation times attached to each measurement.

Latest endpoint observation: . Latest price capture: . Prices are recorded quotes, not a promise of availability. Token assets and payment terms are listed separately. Endpoint data JSON · Price history JSON · Measurement methodology.

Assessment computed at . Uptime uses the stated daily-rollup window; response times are in milliseconds, compliance is passed/evaluated checks, and traction is a measured settlement floor. The comparison score is out of 100 within this category. Assessment JSON · Measurement methodology.

Observed daily coverage: 2026-09-20 to 2026-10-19 UTC. Daily monitoring and settlement rollups do not expose their computation time; a bucket date is not an update timestamp. Latest settlement in the assessment: . Uptime and response JSON · Volume JSON · Buyers JSON · Measurement methodology.

Ranked from the measured category pool, refreshed at most once a minute. The comparison has no persisted computation timestamp; the assessment time above belongs to this service only. Ranking API documentation · Ranking methodology.

x402 List home · Services · Data

uptime · latest daily rollup
100%
uptime 7d
100%
uptime 30d
100%
uptime 90d
99.8%
response p95
358ms
avg response
417ms
total checks
2,714

Measured on the unpaid 402 handshake, not the paid call. A service can 402 correctly and still fail after payment.

price (min)
$0.005
price (max)
$0.01
category percentile (min)
p42 in Data
category percentile (max)
p24 in Data
endpoints / prices
6 / 2
model
tiered
stability
91%

No deterministic risk flag. Risk fires only on an exact blocklist match, or a reserved-brand name with a mismatched verified payTo. Never from low uptime, a high price, or a model guess.

domain age
-
registrar
-
hosting
custom
domain created
---

Identity facts, not a risk score.

assessment volume 30d
$0.73
exact assessment volume 30d (USD)
0.7270700000000001
assessment recorded at (UTC)
2026-10-19T08:03:49.733Z
buyers 30d
35
settlements 30d
666
measured since
2026-06-13 (start of our harvest window)
last settlement
2026-10-19
top buyer share
70% of 30d volume (address, not entity)
top 3 buyers share
80% of 30d volume (addresses, not entities)
concentrated volume
no
trend 7d vs 30d
1.19x the 30d daily rate
networks
eip155:137, eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdpKuc147dw2N9d
volume all-time
$2.71
settlements all-time
1,114
median settlement 30d
$0.006
max settlement 30d
$0.035

Assessment volume uses the latest 30d assessment. Over time sums daily address snapshots, rounded to cents and refreshed separately. The two sources can differ in timing, precision and shared-address attribution. Amounts use cents for comparison; known sub-cent values keep up to 12 significant digits. The exact stored assessment value is shown above.

Attributed pro-quota: this payout address is shared, so volume is the operator-level figure divided by the services sharing it, while buyer and transaction counts stay whole. A declared convention, not an individually observed measure, and still a conservative undercount.

Currently sharing this payout address with Apple App Store Search, Reviews & App Data, Atlas Market Data, CoinGecko Crypto Price & Data (x402 Atlas), Crypto Perp Signals, DefiLlama Data API (x402 Atlas), Email Auth Check (SPF/DMARC/DKIM), GDELT News Search and Timeline, Google Trends SEO Keyword Data, HTTP Security Headers Check, Hyperliquid Account Intelligence, Hyperliquid Market Data, Hyperliquid Prediction Markets Data (x402 Atlas), Image Optimizer & WebP Converter, Places & Local Business Search, URL Unwrap / Redirect Tracer, Web Search, News & Page Reader, Wikipedia Article Summary, X (Twitter) Media Downloader.

Top buyer share lowers the on-chain traction part of the ranking score behind this page's verdict and /best, by up to half when one address holds all 30d volume. The Recommended and Highest volume sorts of the services list do not use it; they use the Concentrated volume rule instead.

member since
2026-07-20
Recent checks
Latest 18 unpaid HTTP checks, newest first; response times in milliseconds, observation times in UTC
Checked at (UTC)StatusHTTPResponseEndpoints
Online402339ms6
Online402261ms6
Online402310ms6
Online402168ms6
Online402273ms6
Online402302ms6
Online402364ms6
Online402320ms6
Online402153ms6
Online402209ms6
Online402232ms6
Online402129ms6
Online402349ms6
Online402343ms6
Online402278ms6
Online402414ms6
Online402325ms6
Online402339ms6

Changes1 in 30d

Latest 1 recorded changes, up to 10 in the last 30 days; newest first; observation times in UTC
Observed at (UTC)ChangeEvidence
price changed

GET /whois · eip155:137 · USDC: 5000 → 10000

GET /whois · eip155:42161 · USD Coin: 5000 → 10000

GET /whois · eip155:8453 · USDC: 5000 → 10000

GET /whois · solana:5eykt4usfv8p8njdtrepy1vzqkqzkvdp · USDC: 5000 → 10000

Amounts are on-wire atomic units in the named asset.

all changes

Over time

On-chain volume daily snapshots, USD 30d: $0.73, peak $0.69 on 10-08
volume no data in the payload
Distinct buyers per dayDistinct buyers per day
Uptime 100% on all 29 completed days
Volume 30d
$0.73
Uptime
100% on all 29 completed days
Daily on-chain settlement volume in US dollars, 2026-09-20 to 2026-10-19; highest day $0.69 on 10-08; 2 days have no data in the payload; distinct buyers per day
More charts
Response time daily average, ms min 220ms, avg 414ms, max 719ms

09-20 to 10-19* UTC

Scores over time

x402 compliance low 14/14, high 14/14

09-20 to 10-19* UTC

Price percentile in Data own low to high; exact values below

09-20 to 10-19* UTC

Site signals present (of 6) own low to high; exact values below

09-20 to 10-19* UTC

Scores: one day per column, 09-20 to 10-19*, on the columns of Response time. Uptime held 100% every day in this window, including any partial day. Daily readings remain in the Uptime strip and Values. The checklist grew from 11 to 14 checks on 2026-07-28, before this window. Pillar lines use their own low and high. Exact dated readings are available in each readout and in Values.

Each series spans only the dates it has data for. Every series is also served as JSON at /api/v1/services/dns-whois-domain-lookup/price, /scores, /volume and /buyers.

Values

* today so far, partial (UTC).

The uptime summary counts completed UTC days only. The strip, readouts and table retain today's partial reading.

Daily snapshot total, 30d: $4.17, peak $0.69 on 10-08. The visible 30d total in Traction comes from the latest assessment. These sources can differ in their window, refresh time, cent rounding and shared-address attribution.

Daily address snapshots: 2026-09-20 to 2026-10-19 UTC; * today so far, partial (UTC). Daily snapshots store cents. A recorded $0.00 with settlements cannot distinguish exact zero from volume rounded away. Lost precision is unavailable here.

Settlement volume uses the stored USD valuation of tracked payments; it is distinct from token quantities. USD-pegged assets are valued at 1 USD per token in these rollups. The measured settlement floor does not cover all payments to this service.

Shared payout address (19 other services). These bars are the full shared address (operator-level), so do not sum them across the services that share it. Where a per-service figure is attributed, the assessment block and the ranking, it is the address total divided pro-quota by the 20 services sharing it: a declared convention, not an individually observed measure.

Per-service buyer and transaction counts are shown whole (integers), not divided; only volume is attributed pro-quota. A declared convention, not an individually observed measure.

Assessment history last recorded at . Each UTC day uses its last recorded run; missing readings stay unmeasured. Assessment history JSON · Measurement methodology.

Daily values, 2026-09-20 to 2026-10-19: address settlement volume in USD, distinct buyer and settlement counts, uptime percent, average response milliseconds, compliance passed/total, price percentile 0-100, site signals out of 6; UTC dates
DayVolumeBuyersSettlementsUptimeResponseCompliancePrice percentileSite signals
2026-09-20$0.0111100%432.20ms14/14p403/6
2026-09-21$0.0111100%566.18ms14/14p403/6
2026-09-22$0.0223100%665.94ms14/14p403/6
2026-09-23$0.0223100%561.26ms14/14p413/6
2026-09-24$0.0917100%380.29ms14/14p403/6
2026-09-25$0.1028100%397.00ms14/14p403/6
2026-09-26$0.0917100%600.44ms14/14p403/6
2026-09-27no datano datano data100%489.91ms14/14p403/6
2026-09-28$0.0222100%495.11ms14/14p413/6
2026-09-29no datano datano data100%466.53ms14/14p413/6
2026-09-30$0.0346100%481.36ms14/14p413/6
2026-10-01$0.0428100%718.92ms14/14p413/6
2026-10-02$0.0223100%606.69ms14/14p413/6
2026-10-03$0.35251100%287.13ms14/14p413/6
2026-10-04$0.61591100%430.78ms14/14p433/6
2026-10-05$0.15323100%306.96ms14/14p433/6
2026-10-06$0.06312100%230.06ms14/14p423/6
2026-10-07$0.301049100%291.08ms14/14p423/6
2026-10-08$0.693117100%479.20ms14/14p433/6
2026-10-09$0.573105100%376.66ms14/14p433/6
2026-10-10$0.14427100%380.31ms14/14p423/6
2026-10-11$0.0111100%412.28ms14/14p433/6
2026-10-12$0.15621100%338.30ms14/14p433/6
2026-10-13$0.25446100%377.13ms14/14p433/6
2026-10-14$0.15630100%330.31ms14/14p423/6
2026-10-15$0.15421100%336.93ms14/14p423/6
2026-10-16$0.0223100%277.73ms14/14p423/6
2026-10-17$0.0223100%240.40ms14/14p423/6
2026-10-18$0.0223100%219.86ms14/14p423/6
2026-10-19*$0.08414100%244.46ms14/14p423/6

Alternatives in Data

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SniperX•x402 strong 97/100 99.9% up 30d $582.66 30d
glim.sh strong 95/100 100% up 30d $30.28 30d
cn402 strong 93/100 100% up 30d $39.26 30d
twit.sh strong 93/100 100% up 30d $47.43 30d

5 of 385 other ranked services in Data, ordered by the same measured score.

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