{"uid":"cap_SlhuHkKsy6p63P524vMAc","slug":"karma-domains-whois-domain-checker-b4191a39","name":"Karma.Domains WHOIS Domain Checker","description":"Find expired domain names with high traffic and strong SEO backlinks daily. Boost your revenue by searching our database of 13,000,000+ expired domains from auctions, backorders, and dropped lists—complete with rich metrics and domain age.","url":"https://api.karma.domains/v1/domains/checker/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","example":"example.com"}}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"domain":"example.com","domain_status":"Registered"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"1.5","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":"$1.5/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"1.5","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"1.5","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_5TnDFSGHjtb1V0R4K96SQ","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"1.5","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 on a given domain name to return its registration status and related metadata","exampleAgentPrompt":"Can you check the WHOIS status of mybrand.com and tell me if it's currently registered or available?","exampleUseCases":[{"title":"Domain availability check before purchase","prompt":"I'm thinking of starting a business called NovaSpark — can you check if novaspark.com is registered or still available to buy?"},{"title":"Verify competitor domain ownership","prompt":"Can you look up the WHOIS status of mycompetitor.io and tell me whether it's currently registered and active?"},{"title":"Expired domain hunting for SEO","prompt":"I want to know if the domain vintagegear.net has expired or is still registered — check its WHOIS status for me."}],"resultDescription":"Returns a JSON object containing the queried domain name and its registration status (e.g. 'Registered' or similar), reflecting current WHOIS data for that domain.","failureModes":["Missing or invalid domain query parameter returns an error","Domain with unusual TLDs may not be supported","Rate limiting or payment failure (HTTP 402) if payment not processed","WHOIS data unavailable for certain private or restricted TLDs","Network timeout for slow WHOIS registry responses"],"whenToPreferThis":"Choose this endpoint when you need a quick, per-domain WHOIS registration status check and are willing to pay per-query via x402 micropayment. It is backed by Karma.Domains' large expired domain database, making it especially useful when cross-referencing WHOIS status alongside expired/auction domain data. Prefer it over generic WHOIS APIs when you also plan to explore expired domain opportunities on the same platform.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-16T12:40:52.221Z","isFirstParty":false,"canonicalSlug":"karma-domains-whois-domain-checker-b4191a39"}