{"uid":"cap_eZ45Lko6Huz2gy2I3Mp5F","slug":"dns-a-record-lookup-for-webmail-subdomain-via-cloudflare-doh-c409a1db","name":"DNS A Record Lookup for webmail Subdomain via Cloudflare DoH","description":"A record of webmail.<domain>: looks up the webmail 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 webmail without enumerating subdomains. $0.01 per lookup.","url":"https://dns.intel.rallylive.ca/dns/host/webmail/a?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$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_HlMVDj70HcPKImyHM6asL","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 (IPv4) record for the webmail.<domain> subdomain using Cloudflare DNS over HTTPS and reports existence, IP records, and TTL.","exampleAgentPrompt":"Can you check whether example.com has a webmail subdomain set up — look up its A record via Cloudflare DoH and tell me if it resolves and what IP it points to?","exampleUseCases":[{"title":"Email infrastructure reconnaissance","prompt":"I need to know if contoso.com has a webmail server — can you look up the A record for webmail.contoso.com and tell me if it exists and what IP it resolves to?"},{"title":"Pre-sales domain capability check","prompt":"Before I reach out to this prospect, check whether acmecorp.com has a webmail subdomain set up — does webmail.acmecorp.com resolve to an IP address?"},{"title":"Monitoring webmail host availability","prompt":"Can you verify that webmail.mybusiness.com is still resolving to an IP — check its DNS A record and tell me the TTL as well?"}],"resultDescription":"Returns whether the webmail.<domain> A record exists, the resolved IPv4 address(es), the TTL value, and the DNS response code. If the subdomain does not exist, indicates that no record was found.","failureModes":["Domain does not exist — NXDOMAIN response returned","webmail subdomain not configured — no A record found","Cloudflare DoH unavailable — upstream resolver timeout","Invalid domain format provided — query fails","Network error between the service and Cloudflare DoH"],"whenToPreferThis":"Use this endpoint when you need a fast, targeted check on whether a specific domain has a webmail subdomain configured, without running a full subdomain enumeration. Prefer it over generic DNS A lookup endpoints when you specifically want the webmail.<domain> host, and prefer it over AAAA lookup when you need IPv4 addresses only.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-22T18:49:17.597Z","isFirstParty":false,"canonicalSlug":"dns-a-record-lookup-for-webmail-subdomain-via-cloudflare-doh-c409a1db"}