{"uid":"cap_AltGzxd2o4oD1bbteCD0h","slug":"sift-web-tools-whois-domain-lookup-5c8b7c56","name":"Sift Web Tools – WHOIS Domain Lookup","description":"Domain WHOIS via RDAP: registrar, creation and expiry dates, age. Registration data from the official RDAP registry: registrar, status, created, updated, expiry, domain age in days, nameservers, DNSSEC.","url":"https://sift.srv1996466.hstgr.cloud/v1/whois?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"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","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","required":["domain"],"properties":{"domain":{"type":"string","description":"Domain, e.g. example.com"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"domain":"example.com","age_days":11000,"registrar":"RESERVED-Internet Assigned Numbers Authority","registered":true}},"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_daYEAfMAf2JGQZ-V83xYJ","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":"Returns WHOIS registration facts for a domain, including registrar, registration date, and domain age in days","exampleAgentPrompt":"Can you look up the WHOIS info for openai.com — I want to know the registrar, when it was registered, and how old the domain is?","exampleUseCases":[{"title":"Vetting an unfamiliar vendor domain","prompt":"Before I sign up, can you check the WHOIS record for getfastcash-loans.biz — I want to know how old the domain is and who registered it?"},{"title":"Security research on a phishing link","prompt":"I got a suspicious email from support@secure-paypal-verify.com — can you pull the WHOIS data on that domain so I can see when it was created and who the registrar is?"},{"title":"Competitive intelligence on a rival site","prompt":"Can you look up the WHOIS record for rival-startup.io? I'm curious how long they've been around and which registrar they use."}],"resultDescription":"Returns a JSON object with the domain name, whether it is registered, the registrar name, the registration date, and the domain age in days (e.g. {\"domain\":\"example.com\",\"age_days\":11000,\"registrar\":\"RESERVED-Internet Assigned Numbers Authority\",\"registered\":true}).","failureModes":["Domain not found or unregistered — may return registered: false with no further details","Invalid domain format — missing required 'domain' query parameter returns a 4xx error and no charge","WHOIS data unavailable for certain TLDs with privacy-restricted registries","Network timeout reaching the WHOIS registry — no charge on non-200 response","Rate limiting by upstream WHOIS registry may cause intermittent failures"],"whenToPreferThis":"Use this endpoint when you need quick, structured domain registration facts (registrar, age, registered status) for a single domain in real time — especially useful for trust-scoring unfamiliar domains, OSINT workflows, phishing triage, or vendor vetting. Prefer this over raw WHOIS CLI tools when you need JSON output ready for downstream agent logic. Pay-per-call pricing (charged only on success) makes it cost-effective for sporadic lookups without subscription overhead.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-23T14:06:43.116Z","isFirstParty":false,"canonicalSlug":"sift-web-tools-whois-domain-lookup-5c8b7c56"}