{"uid":"cap_4nf52lsuOHyo5VH-bU-PS","slug":"dns-aaaa-app-subdomain-b9506777","name":"dns-aaaa-app-subdomain","description":"AAAA record of app.<domain>: looks up the app 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 app without enumerating subdomains. $0.01 per lookup.","url":"https://dns.intel.rallylive.ca/dns/host/app/aaaa?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$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_Kp2xKUHUkYQNBzZlDOFBq","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 AAAA (IPv6) DNS record for the app.<domain> subdomain via Cloudflare DNS over HTTPS and returns whether it exists, its records, and TTL.","exampleAgentPrompt":"Can you check whether app.rallylive.ca has an IPv6 DNS record — does it exist, and if so what are the AAAA records and TTL?","exampleUseCases":[{"title":"IPv6 readiness check for app host","prompt":"I need to know if app.shopify.com is configured with IPv6 — can you look up its AAAA record and tell me what addresses it resolves to and the TTL?"},{"title":"Verify app subdomain existence before deployment","prompt":"Before we go live, can you confirm that app.ourstartup.io has a valid AAAA DNS record set up, and what the records say?"},{"title":"Diagnose missing IPv6 for app subdomain","prompt":"Our users on IPv6 networks can't reach app.acmecorp.com — can you check if there's an AAAA record for that subdomain and what TTL it has?"}],"resultDescription":"Returns whether the app.<domain> subdomain exists in DNS, its AAAA (IPv6) records and associated values, the TTL, and the DNS response code — all sourced from Cloudflare's DNS over HTTPS resolver.","failureModes":["Domain does not exist — NXDOMAIN response, no records returned","app subdomain exists but has no AAAA record — empty record set returned","Invalid or malformed domain input — request error","Cloudflare DoH resolver unreachable — upstream timeout or connectivity failure","Rate limiting or payment failure — request rejected before DNS query is made"],"whenToPreferThis":"Choose this endpoint when you need a quick, targeted IPv6 DNS existence check specifically for the 'app' subdomain of a given domain, without enumerating all subdomains. It is ideal for infrastructure validation, deployment readiness checks, and IPv6 connectivity diagnostics. Prefer this over generic DNS tools when you want a pay-per-lookup, no-setup resolution via Cloudflare's trusted DoH resolver.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T18:48:28.896Z","isFirstParty":false,"canonicalSlug":"dns-aaaa-app-subdomain-b9506777"}