{"uid":"cap_UC7btGmdtx2GJkkIWiaNO","slug":"dns-reverse-ip-lookup-api-622ccf9a","name":"DNS Reverse-IP Lookup API","description":"DNS records, WHOIS, SSL certificate, subdomain discovery, and reverse-IP lookup with x402 payments.","url":"https://dns.payapi.market/dns/reverse?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"ip":{"type":"string","description":"IPv4 or IPv6 address to reverse-resolve, e.g. '1.1.1.1'."}}},"responseSchema":{"type":"json","example":{"ip":"1.1.1.1","ptr":{"aliases":[],"primary":"one.one.one.one"},"other_domains":["one.one.one.one","1dot1dot1dot1.cloudflare-dns.com"],"hackertarget_error":null,"other_domains_count":2,"other_domains_source":"hackertarget.com (free, ~100/day per IP)"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","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":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_919f1M6brDAWpPEIf7rtf","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Resolves an IPv4 or IPv6 address to its PTR hostname and discovers other domains hosted on the same IP.","exampleAgentPrompt":"What domain name does the IP address 1.1.1.1 resolve to, and are there any other domains hosted on that same IP?","exampleUseCases":[{"title":"Identify server behind an IP","prompt":"I have an IP address 104.21.45.23 — can you do a reverse DNS lookup and tell me what hostname it resolves to and what other domains might be sharing that server?"},{"title":"Security investigation of suspicious IP","prompt":"We flagged the IP 185.220.101.34 in our logs — can you reverse-resolve it to see what domain it belongs to and check if any other known domains are hosted there?"},{"title":"Competitor infrastructure research","prompt":"I want to know what other websites are co-hosted on the same server as 34.102.136.180 — run a reverse IP lookup and list all the domains you find."}],"resultDescription":"Returns the queried IP address, its primary PTR hostname record and any aliases, a list of other domains co-hosted on the same IP (sourced from HackerTarget), the count of co-hosted domains, and any error details from the HackerTarget lookup.","failureModes":["Invalid IP format returns a validation error","HackerTarget daily rate limit (~100/day per IP) exhausted returns hackertarget_error field populated","IPv6 addresses may have limited co-hosted domain data","Private/reserved IP ranges may return no PTR or co-hosted domains","Payment failure via x402 results in 402 response before query is executed"],"whenToPreferThis":"Choose this endpoint when you need to reverse-resolve an IP to its PTR hostname AND simultaneously discover other domains co-hosted on the same IP. It combines standard reverse-DNS with co-hosting enumeration in one call, making it ideal for security investigations, infrastructure reconnaissance, and network analysis workflows that need both pieces of data together.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-17T12:39:12.239Z","isFirstParty":false,"canonicalSlug":"dns-reverse-ip-lookup-api-622ccf9a"}