{"uid":"cap__pFmTRlNaBwVi1bs1vyP9","slug":"call402-com-domain-lookup-6528bf98","name":"call402.com Domain Lookup","description":"USDC pay-per-call APIs for AI agents via the x402 protocol (v2, exact, Base mainnet). Send a request, receive HTTP 402 with payment requirements, pay with @x402/fetch or any x402 client, retry with the PAYMENT-SIGNATURE header.","url":"https://call402.com/api/domain-lookup?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"domain":{"type":"string","description":"Domain name to look up"}}},"responseSchema":{"type":"json","example":{"dns":{"A":["93.184.216.34"],"MX":[],"NS":["a.iana-servers.net."],"TXT":[],"AAAA":[],"CNAME":[]},"meta":{"sources":["cloudflare-doh","rdap"]},"rdap":{"handle":null,"status":["active"],"created":"1995-08-14T04:00:00Z","expires":"2026-08-13T04:00:00Z","updated":null,"registrar":"RESERVED-Internet Assigned Numbers Authority","nameservers":["a.iana-servers.net"]},"domain":"example.com","data_quality":"full"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_tsB8gzVdJVM3zL8Ih77ED","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Looks up DNS records and RDAP registration details for a given domain name, paid per-call via USDC on Base mainnet using the x402 protocol.","exampleAgentPrompt":"Can you look up the DNS records and registration details for github.com — I want to see its A records, nameservers, registrar, and when it expires?","exampleUseCases":[{"title":"Verify email routing for a domain","prompt":"Can you pull the MX records for acmecorp.com so I can confirm their email is routing correctly?"},{"title":"Check domain expiry before outreach","prompt":"Look up the registration info for startupxyz.io — specifically when it was created, when it expires, and who the registrar is."},{"title":"Investigate suspicious domain","prompt":"Can you fetch the full DNS records and RDAP details for suspicious-login-portal.com? I want to know its IP, registration date, and current status."}],"resultDescription":"Returns a JSON object containing: DNS records (A, AAAA, MX, NS, TXT, CNAME), RDAP registration data (registrar, handle, status, created/expires/updated dates, nameservers), the queried domain name, data sources used (e.g. cloudflare-doh, rdap), and a data_quality field indicating completeness of results.","failureModes":["Domain not found or non-existent TLD returns empty or partial DNS records","RDAP data unavailable for some TLDs (e.g. certain ccTLDs) may return null fields","Payment not sent returns HTTP 402 with payment requirements; request must be retried with PAYMENT-SIGNATURE header","Invalid domain string (malformed input) may cause a 400 or empty response","Network timeout to upstream DNS/RDAP resolvers may cause partial results or error"],"whenToPreferThis":"Choose this endpoint when you need combined DNS and RDAP/registration data in a single call, especially in an autonomous agent context where pay-per-use micropayment billing (USDC via x402) is preferred over subscription APIs. It is well-suited for one-off or low-volume domain intelligence lookups without requiring an API key signup.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-29T13:08:16.341Z","isFirstParty":false,"canonicalSlug":"call402-com-domain-lookup-6528bf98"}