{"uid":"cap_BEpWXD-12OOUx9clH_2OM","slug":"dns-cname-lookup-for-mx-subdomain-via-cloudflare-doh-df324692","name":"DNS CNAME Lookup for mx Subdomain via Cloudflare DoH","description":"CNAME record of mx.<domain>: looks up the mx 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 mx without enumerating subdomains. $0.01 per lookup.","url":"https://dns.intel.rallylive.ca/dns/host/mx/cname?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$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_xQW0FSUqsZUijt3cV9DnG","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 mx.<domain> subdomain using Cloudflare DNS over HTTPS and returns whether it exists, its records, and TTL.","exampleAgentPrompt":"Can you check whether mx.rallylive.ca has a CNAME record configured, and tell me what it points to and what the TTL is?","exampleUseCases":[{"title":"Email routing configuration verification","prompt":"Does mx.stripe.com have a CNAME record set up? I want to see what it resolves to and what the TTL is."},{"title":"Pre-send mail infrastructure audit","prompt":"Before I set up email sending for acme.io, can you check whether mx.acme.io exists as a CNAME and what it's pointing to?"},{"title":"Troubleshooting missing mail subdomain","prompt":"I'm having email delivery issues with clientdomain.net — can you check if mx.clientdomain.net has a CNAME record or if it's missing entirely?"}],"resultDescription":"Returns whether the mx.<domain> CNAME record exists, the record value(s) it resolves to, and the TTL — or indicates the record does not exist if absent.","failureModes":["Domain not found or does not exist — returns no record found","CNAME record absent for mx subdomain — returns non-existence result","Network or Cloudflare DoH resolver timeout — lookup fails","Malformed domain input — request may fail or return error","mx subdomain uses A/AAAA record instead of CNAME — CNAME lookup returns empty"],"whenToPreferThis":"Use this endpoint when you need a quick, targeted existence check for the mx CNAME record specifically, without enumerating all subdomains. Prefer it over general DNS tools when you need fast Cloudflare DoH-backed resolution with structured output and a clear exists/not-exists signal for the mx host.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-22T00:31:09.146Z","isFirstParty":false,"canonicalSlug":"dns-cname-lookup-for-mx-subdomain-via-cloudflare-doh-df324692"}