{"uid":"cap_I-xcaPrkuLlsqDskS3_LT","slug":"dns-aaaa-record-lookup-for-vpn-domain-via-cloudflare-doh-42f7ccab","name":"DNS AAAA Record Lookup for vpn.<domain> via Cloudflare DoH","description":"AAAA record of vpn.<domain>: looks up the vpn host under the domain you give (AAAA via Cloudflare DoH) and reports whether it exists, its records and TTL. Quick existence check for common hosts like vpn without enumerating subdomains. $0.01 per lookup.","url":"https://dns.intel.rallylive.ca/dns/host/vpn/aaaa?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$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_v_7KgU66DzJD9QphG9c1D","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 IPv6 (AAAA) DNS record for the vpn subdomain of a given domain using Cloudflare DNS over HTTPS, returning existence status, records, and TTL.","exampleAgentPrompt":"Check whether vpn.example.com has an IPv6 (AAAA) DNS record — I want to know if the VPN subdomain exists and what its address and TTL are.","exampleUseCases":[{"title":"VPN host IPv6 existence check","prompt":"Does vpn.acmecorp.com have an IPv6 DNS record? I need to know if the VPN subdomain is set up with an AAAA record and what its TTL is."},{"title":"Pre-deployment infrastructure validation","prompt":"Before we go live, check if vpn.newstartup.io resolves to an IPv6 address — I want to confirm the AAAA record is in place for our VPN host."},{"title":"Competitor VPN infrastructure research","prompt":"Can you look up whether vpn.competitor.net has an IPv6 address configured in DNS? I'm trying to understand if they're using dual-stack on their VPN endpoint."}],"resultDescription":"Returns whether the vpn.<domain> AAAA record exists, the IPv6 address records if present, the TTL value, and the DNS response code from Cloudflare's DoH resolver.","failureModes":["Domain does not exist — returns NXDOMAIN or equivalent non-existence response","vpn subdomain has no AAAA record — returns empty records but no error","Invalid domain format provided — may return error or empty result","Cloudflare DoH service unavailable — upstream resolver failure","Network timeout reaching the DoH endpoint"],"whenToPreferThis":"Use this endpoint when you need a fast, targeted IPv6 DNS existence check specifically for the vpn subdomain of a domain, without performing broad subdomain enumeration. Prefer it over general DNS lookup tools when you only care about VPN host IPv6 reachability and want a low-cost ($0.01) single-purpose check via Cloudflare's reliable DoH infrastructure.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T18:56:08.244Z","isFirstParty":false,"canonicalSlug":"dns-aaaa-record-lookup-for-vpn-domain-via-cloudflare-doh-42f7ccab"}