{"uid":"cap_1SbGSk63H1QHbVHc0WIIg","slug":"dns-cname-lookup-for-sip-subdomain-4b63abb5","name":"DNS CNAME Lookup for sip Subdomain","description":"CNAME record of sip.<domain>: looks up the sip host under the domain you give (CNAME via Cloudflare DoH) and reports whether it exists, its records and TTL. Quick existence check for common hosts like sip without enumerating subdomains. $0.01 per lookup.","url":"https://dns.intel.rallylive.ca/dns/host/sip/cname?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$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_VpoZEqd6DtEiEEeuquZ_d","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 CNAME record for the sip.<domain> subdomain via Cloudflare DNS-over-HTTPS and returns whether it exists, its records, and TTL.","exampleAgentPrompt":"Can you check if example.com has a CNAME record configured for its sip subdomain — I want to know if the sip.example.com host exists and what it points to.","exampleUseCases":[{"title":"Verify SIP infrastructure before VoIP setup","prompt":"Check whether sip.acmecorp.com has a CNAME record — I need to confirm the SIP subdomain is configured before we set up VoIP calling for them."},{"title":"Audit domain DNS for SIP presence","prompt":"Does the domain mycompany.io have a sip subdomain CNAME set up? I'm auditing our DNS to make sure our SIP telephony host is properly pointed."},{"title":"Troubleshoot missing SIP connectivity","prompt":"We're having SIP connection issues — can you look up the CNAME record for sip.telecompartner.net and tell me if it exists and what TTL it has?"}],"resultDescription":"Returns whether the sip.<domain> CNAME record exists, the CNAME target it resolves to, the TTL value, and the DNS response code — all answered via Cloudflare DNS-over-HTTPS.","failureModes":["Domain not found or no CNAME record at sip.<domain> returns a NXDOMAIN or empty response","Malformed domain input may result in an error or unexpected DNS response","Cloudflare DoH upstream unavailability could cause lookup failures","Rate limits or payment failures may prevent access"],"whenToPreferThis":"Use this endpoint when you need a quick, targeted check on whether the sip subdomain of a specific domain has a CNAME record configured — without needing to enumerate all subdomains or query multiple DNS record types. Ideal for VoIP/SIP infrastructure validation, DNS auditing, or pre-deployment checks for SIP services.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-20T00:59:31.000Z","isFirstParty":false,"canonicalSlug":"dns-cname-lookup-for-sip-subdomain-4b63abb5"}