{"uid":"cap_P5iAvHrV5NgbTJGn_YU4T","slug":"dns-a-record-lookup-for-blog-subdomain-via-cloudflare-doh-495fa5a9","name":"DNS A Record Lookup for blog Subdomain via Cloudflare DoH","description":"A record of blog.<domain>: looks up the blog 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 blog without enumerating subdomains. $0.01 per lookup.","url":"https://dns.intel.rallylive.ca/dns/host/blog/a?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$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_Dohw6f-MQyMIkrXfQa-Se","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":"Resolves the A record of blog.<domain> using Cloudflare DNS over HTTPS, returning existence status, IP records, and TTL.","exampleAgentPrompt":"Does example.com have a blog subdomain set up? Look up the A record for blog.example.com and tell me if it resolves to an IP, what that IP is, and the TTL.","exampleUseCases":[{"title":"Verify blog subdomain before linking","prompt":"Before I add a link to our blog, can you check if blog.acmecorp.com has a valid A record configured? I want to know the IP it resolves to and whether it actually exists."},{"title":"Competitor infrastructure reconnaissance","prompt":"I'm researching our competitor's web setup — can you check whether blog.rivalcompany.com has a DNS A record and, if so, what IP it points to?"},{"title":"Pre-launch DNS check for new blog","prompt":"We just set up DNS for our new blog at blog.startupname.io — can you confirm the A record is live and tell me the TTL and IP address it's resolving to?"}],"resultDescription":"Returns whether the blog.<domain> A record exists, the resolved IP address(es), the TTL value, and the DNS response code (e.g. NOERROR or NXDOMAIN). If the subdomain does not exist, it indicates non-existence rather than returning records.","failureModes":["Domain does not exist or is malformed — returns NXDOMAIN or error response code","blog subdomain not configured — NXDOMAIN with no records returned","Cloudflare DoH service temporarily unavailable — lookup fails with network error","Invalid or missing domain input — request rejected","Transient DNS propagation delay causing inconsistent results"],"whenToPreferThis":"Use this endpoint when you need a quick, single-purpose check on whether a domain has a blog subdomain configured via A record, without needing to enumerate all subdomains. It is ideal for pre-launch verification, competitor research, or automation pipelines that validate blog infrastructure. Prefer this over general DNS tools when you specifically want Cloudflare DoH resolution with a pay-per-lookup model and no setup required.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T18:41:08.442Z","isFirstParty":false,"canonicalSlug":"dns-a-record-lookup-for-blog-subdomain-via-cloudflare-doh-495fa5a9"}