{"uid":"cap_HTk_fK6CmnS_kBFmx5a5X","slug":"dns-a-mx2-subdomain-626a271e","name":"dns-a-mx2-subdomain","description":"A record of mx2.<domain>: looks up the mx2 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 mx2 without enumerating subdomains. $0.01 per lookup.","url":"https://dns.intel.rallylive.ca/dns/host/mx2/a?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$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_6Kw3FjpVzRHWgTAOEQ2Wu","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 for the mx2 subdomain of a given domain via Cloudflare DNS over HTTPS and reports whether it exists, its records, and TTL.","exampleAgentPrompt":"Can you check whether mx2.example.com exists in DNS — I want to know if the mx2 host is configured for that domain, its IP address, and the TTL?","exampleUseCases":[{"title":"Email infrastructure verification","prompt":"Check if mx2.acmecorp.com exists in DNS — I need to know if there's an A record for the mx2 mail host at acmecorp.com and what IP it points to."},{"title":"Pre-migration DNS audit","prompt":"Before we migrate away from our mail provider, can you confirm whether mx2.mycompany.org is still resolving and what TTL is set on that A record?"},{"title":"Third-party domain mail setup check","prompt":"I'm onboarding a partner domain called partnerbiz.net — can you check if they have an mx2 subdomain configured in DNS and what its IP address is?"}],"resultDescription":"Returns whether the A record for mx2.<domain> exists, the resolved IP address(es), the TTL of the record, and the DNS response code (e.g. NOERROR or NXDOMAIN), as answered by Cloudflare DNS over HTTPS.","failureModes":["Domain does not have an mx2 subdomain (NXDOMAIN response)","Invalid or malformed domain name input","Cloudflare DoH upstream timeout or error","Network connectivity issue to the DNS intel service","Payment failure or insufficient USDC balance for the $0.01 fee"],"whenToPreferThis":"Use this endpoint when you need a quick, targeted existence check specifically for the mx2 host under a domain without enumerating all subdomains. It is ideal for mail infrastructure audits, onboarding checks, or monitoring scenarios where the mx2 common subdomain pattern is the specific concern. Prefer this over general DNS A record lookups when you want a pre-scoped mx2 check via Cloudflare DoH specifically.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-20T00:59:10.998Z","isFirstParty":false,"canonicalSlug":"dns-a-mx2-subdomain-626a271e"}