{"uid":"cap_8Py6Obx9ivDmAVxCP4-_e","slug":"how-is-whois-rdap-domain-lookup-b188da52","name":"how.is WHOIS / RDAP Domain Lookup","description":"Registrar, creation and expiry dates, nameservers and status codes for a domain.","url":"https://how.is/v1/domain/whois?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"domain":{"type":"string","maxLength":253,"description":"A bare domain name, e.g. example.com"}}},"responseSchema":{"type":"json","example":{"data":{"_shape":"data.data.data: the parsed WHOIS/RDAP record (registrar, dates, nameservers, status)."},"result":"WHOIS / RDAP for the requested subject","receipt":{"rail":"x402","tool":"whois","charge_usd":0.005,"settlement_tx":"0x…"}}},"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_Lvo4CbzCEVPgLY-tKhkKR","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":"Returns registrar, creation/expiry dates, nameservers, and status codes for a given domain via WHOIS/RDAP.","exampleAgentPrompt":"Can you pull the full WHOIS record for stripe.com — I want to know the registrar, when it was registered, when it expires, and what nameservers it's using?","exampleUseCases":[{"title":"Vetting an unfamiliar vendor domain","prompt":"Before we wire money to this vendor, can you check the WHOIS details for paymentsco-invoice.com — I want to know who registered it, when, and when it expires?"},{"title":"Monitoring domain expiry for a client","prompt":"Can you look up the WHOIS record for myclient-brand.com and tell me the expiry date so I can warn them if it's coming up soon?"},{"title":"Investigating a phishing email sender domain","prompt":"I got a suspicious email from support@secure-bank-alerts.net — can you pull the WHOIS data on that domain so I can see the registrar, creation date, and nameservers?"}],"resultDescription":"A parsed WHOIS/RDAP record including the registrar name, domain creation date, expiry date, nameservers, and domain status codes, along with a payment receipt confirming the charge of $0.005 USDC.","failureModes":["Domain not found in RDAP/WHOIS — returns empty or error if domain is unregistered or RDAP data is unavailable","Invalid domain format — rejected if the input is not a valid bare domain name (e.g. includes http:// or a path)","RDAP server unavailable for the TLD — some ccTLDs lack RDAP support","Rate limiting or payment failure — x402 payment not settled, resulting in 402 response"],"whenToPreferThis":"Use this endpoint when you need structured, parsed WHOIS/RDAP data (registrar, dates, nameservers, status) for a specific domain, especially within an agentic workflow that can handle x402 micropayments. Prefer it over raw WHOIS CLI tools when you need a clean JSON response with a payment receipt, or when querying as part of a domain-vetting or security-analysis pipeline using how.is's suite of domain intelligence tools.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-31T18:34:23.177Z","isFirstParty":false,"canonicalSlug":"how-is-whois-rdap-domain-lookup-b188da52"}