{"uid":"cap_ZqkBxlaykSVR2jZFsKNe-","slug":"ipv4-fr-whois-lookup-api-c91d0043","name":"ipv4.fr WHOIS Lookup API","description":"Fast, reliable network tools API. IP geolocation, DNS lookup, SSL check, WHOIS, email validation, port scan. Free tier available.","url":"https://ipv4.fr/x402/v1/whois/%7Bdomain%7D?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"properties":{"type":"string"}}},"responseSchema":{"type":"json","example":{"domain":"example.com","parsed":{"registrar":"Example Registrar","creation_date":"1995-08-14T04:00:00Z"}}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.003","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":"$0.003/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.003","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_xnKrgt1zDM4Elt4y1TKBE","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.003","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Retrieves WHOIS registration data for a given domain, including registrar, creation date, and ownership details","exampleAgentPrompt":"Can you pull up the WHOIS record for example.com and tell me who registered it, when it was created, and which registrar is managing it?","exampleUseCases":[{"title":"Domain ownership investigation","prompt":"Who owns the domain phishing-scam-site.net? I need to know the registrar, when it was registered, and any contact info from the WHOIS record."},{"title":"Check domain age before purchase","prompt":"Before I make an offer to buy brandname.com, can you check its WHOIS record and tell me how old it is and when it expires?"},{"title":"Security threat research","prompt":"I'm investigating a suspicious domain — can you get the WHOIS data for malware-dropper.ru so I can see when it was created and who registered it?"}],"resultDescription":"A JSON object containing the queried domain name and a parsed WHOIS record with fields such as registrar name, creation date, expiration date, updated date, registrant contact details, and nameservers — all derived from public WHOIS registry data.","failureModes":["Domain not found or unregistered — returns empty or error response","TLD not supported by WHOIS lookup — may return incomplete data","WHOIS rate limiting by upstream registry — may result in timeout or empty response","Malformed domain input — invalid domain format causes request failure","Private/redacted WHOIS — registrant info may be masked by privacy services"],"whenToPreferThis":"Choose this endpoint when you need quick, parsed WHOIS registration data for a domain without setting up a full WHOIS client. It is ideal for agents performing domain due diligence, cybersecurity investigations, or domain age verification, and is priced per call at $0.003 USDC making it cost-effective for occasional lookups. Prefer this over raw WHOIS socket queries when you need structured, JSON-parsed output rather than raw text.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-29T12:36:33.896Z","isFirstParty":false,"canonicalSlug":"ipv4-fr-whois-lookup-api-c91d0043"}