{"uid":"cap_sQnRHZuJW0jpryGdMmpTV","slug":"dns-a-record-lookup-for-voip-subdomain-via-cloudflare-doh-b54df315","name":"DNS A Record Lookup for voip Subdomain via Cloudflare DoH","description":"A record of voip.<domain>: looks up the voip 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 voip without enumerating subdomains. $0.01 per lookup.","url":"https://dns.intel.rallylive.ca/dns/host/voip/a?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$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_YNmuEIqjOlpaKnDcQXENz","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 of the voip.<domain> subdomain using Cloudflare DNS over HTTPS and returns existence status, IP records, and TTL.","exampleAgentPrompt":"Can you check if example.com has a voip subdomain set up — I want to know if voip.example.com resolves to any IP address and what its TTL is?","exampleUseCases":[{"title":"VoIP infrastructure presence check","prompt":"I'm doing recon on acmecorp.com — can you check whether they have a voip.acmecorp.com host configured in DNS and what IP it points to?"},{"title":"Pre-migration VoIP DNS validation","prompt":"Before we cut over our phone system, can you verify that voip.ourcompany.com resolves correctly and tell me the A record and TTL?"},{"title":"Vendor DNS due diligence","prompt":"We're evaluating a new telecom vendor at vendorcorp.net — can you check if they have a voip subdomain set up and what IP it resolves to?"}],"resultDescription":"Returns whether voip.<domain> exists as an A record, the resolved IPv4 address(es), the TTL value, and the DNS response code (e.g. NOERROR or NXDOMAIN) as answered by Cloudflare DoH.","failureModes":["Domain does not exist — returns NXDOMAIN response code with no records","voip subdomain not configured — NXDOMAIN with empty records","Network or DoH resolver timeout — upstream Cloudflare error","Invalid domain input — malformed query error","Payment not processed — 402 response before lookup is performed"],"whenToPreferThis":"Use this endpoint when you need a quick, targeted existence and resolution check specifically for the voip subdomain of a domain without enumerating all subdomains. Prefer this over full subdomain enumeration tools when you only need to confirm VoIP DNS presence. It is cost-effective at $0.01 per lookup and uses Cloudflare DoH for reliable, low-latency resolution.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-20T00:55:54.165Z","isFirstParty":false,"canonicalSlug":"dns-a-record-lookup-for-voip-subdomain-via-cloudflare-doh-b54df315"}