{"uid":"cap_5KWtm3_fRcW5cLCiMD8Hs","slug":"dns-a-record-lookup-for-api-domain-subdomain-via-cloudflare-doh-310b663d","name":"DNS A Record Lookup for api.<domain> Subdomain via Cloudflare DoH","description":"A record of api.<domain>: looks up the api host under the domain you give (A via Cloudflare DoH) and reports whether it exists, its records and TTL. Quick existence check for common hosts like api without enumerating subdomains. $0.01 per lookup.","url":"https://dns.intel.rallylive.ca/dns/host/api/a?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$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"],"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":"0.01","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_cvL728SA7YoX3FGr5xYDY","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":"Looks up the A (IPv4 address) DNS record for the 'api' subdomain of a given domain using Cloudflare DNS over HTTPS, returning existence status, records, and TTL.","exampleAgentPrompt":"Can you check whether api.stripe.com has an A record — I want to know if it resolves to an IP address and what the TTL is?","exampleUseCases":[{"title":"Verify API subdomain before integration","prompt":"Before I start integrating with Acme Corp's API, can you check if api.acmecorp.com actually resolves to an IP address via DNS?"},{"title":"Infrastructure audit for client domain","prompt":"I'm auditing myclient.io — can you tell me if their api subdomain has a valid A record and what IP it points to?"},{"title":"Competitive recon on API presence","prompt":"I want to know if competitor.com has an active api subdomain — check if api.competitor.com resolves in DNS and what its TTL is."}],"resultDescription":"Returns whether api.<domain> exists in DNS, its A record(s) with associated IPv4 addresses, the TTL value, and the DNS response code — all as resolved by Cloudflare's 1.1.1.1 DNS over HTTPS resolver.","failureModes":["Domain does not exist (NXDOMAIN) — returns no records and a non-zero response code","api subdomain has no A record (e.g. only CNAME or MX records) — returns empty record set","Invalid or malformed domain input — may return error or empty response","Cloudflare DoH resolver temporarily unavailable — request may time out or return an error","Network or payment failure — $0.01 USDC charge may not be processed and request not fulfilled"],"whenToPreferThis":"Use this endpoint when you need a fast, low-cost existence check specifically for the 'api' subdomain of a given domain without performing broad subdomain enumeration. Prefer this over general DNS lookup tools when you want Cloudflare DoH resolution with a simple pay-per-query model and need the result quickly. It is ideal for integration verification, infrastructure audits, and recon tasks where the target subdomain is specifically 'api'.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T18:49:01.653Z","isFirstParty":false,"canonicalSlug":"dns-a-record-lookup-for-api-domain-subdomain-via-cloudflare-doh-310b663d"}