{"uid":"cap_JQfXg-AZrS4haxtjtBNzF","slug":"arch-tools-whois-lookup-6af9aab1","name":"Arch Tools WHOIS Lookup","description":"Domain registration, expiry, nameservers via RDAP. Pay per call with USDC (x402) or credits - archtools.dev","url":"https://archtools.dev/v1/tools/whois-lookup","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"domain":{"type":"string","description":"Domain name to look up (e.g. example.com)"}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.01","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":"$0.01/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.01","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_PX1IdjErE4chj6dK46gr0","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.01","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Performs a WHOIS lookup for a given domain name, returning registration and ownership information","exampleAgentPrompt":"Can you do a WHOIS lookup on openai.com and tell me who registered it, when it expires, and which registrar is handling it?","exampleUseCases":[{"title":"Domain ownership investigation","prompt":"Who owns the domain suspicioussite.xyz? I need the registrant, registrar, and registration date from a WHOIS lookup."},{"title":"Domain expiry check before purchase","prompt":"Can you check the WHOIS record for mybrand.com and tell me when it's set to expire? I want to know if it's coming up for renewal soon."},{"title":"Competitive research on brand domain","prompt":"Look up the WHOIS info for competitor-brand.io — I want to know when they registered it and who their registrar is."}],"resultDescription":"A JSON object containing WHOIS data for the queried domain, typically including registrar name, registration and expiration dates, registrant contact details (where publicly available), name servers, and domain status flags.","failureModes":["Domain not found or not registered — returns empty or error response","WHOIS data redacted by privacy protection services — limited registrant info returned","Invalid domain format supplied — validation error","Rate limiting or temporary unavailability of upstream WHOIS servers","TLD not supported by WHOIS lookup service"],"whenToPreferThis":"Choose this endpoint when you need quick, pay-per-call WHOIS data without managing your own WHOIS client or API keys. It is especially useful for agents doing domain intelligence, cybersecurity research, competitive analysis, or pre-purchase domain research. At $0.01 per call it is cost-effective for occasional lookups integrated into automated workflows via the x402 payment protocol.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T00:40:50.017Z","isFirstParty":false}