{"uid":"cap_pPfBe3OYj6psAH-OAi62d","slug":"dns-a-record-lookup-for-cdn-subdomain-94fcd31b","name":"DNS A Record Lookup for cdn Subdomain","description":"A record of cdn.<domain>: looks up the cdn 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 cdn without enumerating subdomains. $0.01 per lookup.","url":"https://dns.intel.rallylive.ca/dns/host/cdn/a?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$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_ItPEhgyBC1q6vE5KkDQyk","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 record(s) for the cdn.<domain> subdomain via Cloudflare DNS over HTTPS and reports existence, IP addresses, and TTL.","exampleAgentPrompt":"Can you check if shopify.com has a cdn subdomain — look up the A record for cdn.shopify.com and tell me what IP it resolves to and the TTL?","exampleUseCases":[{"title":"Verify CDN presence for a website","prompt":"Check whether stripe.com has a cdn subdomain set up — look up the A record for cdn.stripe.com and let me know if it exists and what IP it points to."},{"title":"Investigate CDN IP for a brand","prompt":"I need to know what IP address cdn.github.com resolves to — can you do a DNS A record lookup on the cdn subdomain of github.com?"},{"title":"Audit CDN configuration before launch","prompt":"Before we go live, can you check if cdn.mycompany.com has an A record configured and what TTL is set for it?"}],"resultDescription":"Returns whether cdn.<domain> exists as an A record, the resolved IPv4 address(es), the TTL in seconds, and the DNS response code (e.g. NOERROR or NXDOMAIN), as answered by Cloudflare DNS over HTTPS.","failureModes":["Domain does not have a cdn subdomain — returns NXDOMAIN response","Invalid or malformed domain input — may return an error or empty result","Domain exists but cdn subdomain is a CNAME, not a direct A record","Network or DoH resolver timeout","Rate limiting or payment failure for the $0.01 USDC per-call fee"],"whenToPreferThis":"Use this endpoint when you need a fast, targeted check for whether a specific domain has a cdn subdomain configured with an A record, without doing a full subdomain enumeration. Prefer this over general DNS tools when you only need the cdn host and want a low-cost ($0.01) single-purpose lookup via Cloudflare DoH for reliability and accuracy.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-23T00:37:30.272Z","isFirstParty":false,"canonicalSlug":"dns-a-record-lookup-for-cdn-subdomain-94fcd31b"}