{"uid":"cap_jb_YcKjvHrH67E3OfrzC7","slug":"syntexa-agentshelf-reverse-dns-lookup-deaae674","name":"Syntexa AgentShelf Reverse DNS Lookup","description":"Call when an agent needs PTR hostnames for a public IPv4 or IPv6 address (private addresses rejected). Exact $0.003 USDC. Prefer unpaid POST /v1/sandbox/reverse-dns first.","url":"https://agentshelf.syntexa.ch/v1/reverse-dns?utm_source=zero.xyz","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"ip":{"type":"string","examples":["8.8.8.8"],"maxLength":64,"minLength":2,"description":"Public IPv4 or IPv6 address such as 8.8.8.8. Private, loopback, link-local, and metadata addresses are rejected."}}},"responseSchema":null,"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_Ifwc-VgRgnw-NzkDRJfta","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":"Performs reverse DNS lookup to retrieve PTR hostnames for a given public IPv4 or IPv6 address","exampleAgentPrompt":"What is the PTR hostname for the public IP address 8.8.8.8? Do a reverse DNS lookup and tell me what it resolves to.","exampleUseCases":[{"title":"Identify server behind suspicious IP","prompt":"Can you do a reverse DNS lookup on 192.0.2.45 and tell me what hostname it resolves to? I want to know who operates that server."},{"title":"Network audit hostname verification","prompt":"I'm auditing our server logs and I need to know the PTR hostname for 203.0.113.77 — can you reverse-resolve that IP address for me?"},{"title":"Email server PTR record check","prompt":"What does the reverse DNS lookup return for the IP 198.51.100.12? I need to know the PTR hostname to check if this mail server is properly configured."}],"resultDescription":"Returns one or more PTR hostnames associated with the provided public IP address, as resolved via reverse DNS. Private/reserved IP addresses are rejected and will return an error.","failureModes":["Private or reserved IP address submitted — endpoint explicitly rejects RFC1918 and loopback addresses","Invalid IP format — non-parseable string returns a validation error","No PTR record exists for the IP — empty or null hostname list returned","Network/DNS timeout — upstream resolver fails to respond in time","Payment failure — x402 USDC payment of $0.003 not processed correctly"],"whenToPreferThis":"Use this endpoint when an agent needs to resolve a public IP address back to its associated PTR/hostname records without any LLM involvement. It is priced per-call at $0.003 USDC and suits agentic workflows doing network analysis, log enrichment, or server identification. Prefer the free sandbox endpoint POST /v1/sandbox/reverse-dns for testing before paying. Do not use for private IP ranges.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-01T06:47:26.282Z","isFirstParty":false,"canonicalSlug":"syntexa-agentshelf-reverse-dns-lookup-deaae674"}