{"uid":"cap_CQETyJHZYJiwKMWETW8Us","slug":"reverse-dns-lookup-change-watch-2d1d44f1","name":"Reverse DNS Lookup Change Watch","description":"Change watch for reverse dns lookup: runs the check and compares it with the result from your previous call for the same ip (kept 90 days), returning the current answer, changed true/false, exactly which fields changed with before/after values, and when it was last seen. Call it on a schedule to be told when reverse dns changes. $0.01 per check.","url":"https://intel.rallylive.ca/watch/dns/reverse","method":"GET","headers":{},"bodySchema":{"type":"object","$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"],"type":"string"},"queryParams":{"type":"object","properties":{}}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.02","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":"$0.02/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.02","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_MrGRP6g6qvhltZZL5qgS0","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.02","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Monitors reverse DNS (PTR) records for a given IP address and alerts when they change, comparing current results against a stored baseline from up to 90 days ago.","exampleAgentPrompt":"Keep an eye on the reverse DNS for 203.0.113.42 and let me know if the PTR record has changed since the last time you checked.","exampleUseCases":[{"title":"Server migration PTR record tracking","prompt":"Watch the reverse DNS for 198.51.100.10 and tell me if the PTR record has changed — I need to know the moment it flips after our server migration."},{"title":"Security alert on suspicious IP hostname change","prompt":"Monitor reverse DNS for 192.0.2.88 on a schedule and alert me if the hostname it resolves to changes — we want to catch any suspicious reassignment."},{"title":"ISP PTR record change detection","prompt":"Check whether the reverse DNS for 203.0.113.5 has changed compared to your last recorded result, and show me exactly what changed with before and after values."}],"resultDescription":"Returns the current reverse DNS (PTR) lookup result for the IP, a boolean indicating whether it has changed since the last call, a detailed diff of exactly which fields changed with before and after values, and a timestamp of when the record was last seen. The baseline is retained for up to 90 days.","failureModes":["IP address not provided or malformed — returns validation error","No previous baseline exists yet (first call) — returns current result with changed=false or no diff","IP has no PTR record — returns empty or NXDOMAIN result","Baseline older than 90 days has been purged — no comparison available","Network error reaching DNS servers — returns upstream failure"],"whenToPreferThis":"Choose this endpoint when you need to detect changes in reverse DNS (PTR) records for a specific IP address over time, rather than performing a one-off lookup. It is ideal for scheduled agent workflows that need to be notified of infrastructure changes, security anomalies, or ISP reassignments without maintaining your own state — the service stores the baseline for 90 days. Prefer this over a raw reverse DNS lookup when change detection and diffing are the primary goal.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T07:22:01.778Z","isFirstParty":false}