{"uid":"cap_gJ-7G0kP6Y8uJAmHopcvM","slug":"dns-a-record-lookup-for-ns1-subdomain-via-cloudflare-doh-b6873a5b","name":"DNS A Record Lookup for ns1 Subdomain via Cloudflare DoH","description":"A record of ns1.<domain>: looks up the ns1 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 ns1 without enumerating subdomains. $0.01 per lookup.","url":"https://dns.intel.rallylive.ca/dns/host/ns1/a?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$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_DjstsFo33imWAY7nCwlWA","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 ns1 subdomain of a given domain using Cloudflare DNS over HTTPS and returns existence status, IP records, and TTL.","exampleAgentPrompt":"Can you check if ns1.acmecorp.com exists and what IP address it resolves to — use Cloudflare DoH to look up the A record for the ns1 subdomain under acmecorp.com?","exampleUseCases":[{"title":"Verify nameserver host configuration","prompt":"Check whether ns1.cloudprovider.io is actually configured — I want to know if the A record exists and what IP it points to."},{"title":"Domain infrastructure reconnaissance","prompt":"Before we onboard this new vendor, can you confirm that ns1.vendordomain.com resolves? I need the IP and TTL if it exists."},{"title":"Monitoring ns1 host availability","prompt":"Can you check right now if ns1.mybusiness.net has a valid A record? I want to know if it's still resolving correctly."}],"resultDescription":"Returns whether the A record for ns1.<domain> exists, the resolved IP address(es), the TTL value, and the DNS response code from Cloudflare's DoH resolver (1.1.1.1).","failureModes":["Domain does not have an ns1 subdomain configured — returns NXDOMAIN or empty records","Invalid or malformed domain input — resolver may return an error code","Cloudflare DoH service unavailable — upstream timeout or connectivity failure","Domain with DNSSEC misconfiguration — may return SERVFAIL","Non-existent TLD or private/reserved domain — no meaningful response"],"whenToPreferThis":"Use this endpoint when you need a fast, targeted check of whether the ns1 host exists under a specific domain without performing broad subdomain enumeration. Ideal for infrastructure validation, vendor onboarding checks, or monitoring pipelines where you want a single authoritative A record lookup via Cloudflare's privacy-respecting DoH resolver. Prefer this over generic DNS tools when you specifically want the ns1 host and want results from Cloudflare's resolver.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-22T19:01:09.515Z","isFirstParty":false,"canonicalSlug":"dns-a-record-lookup-for-ns1-subdomain-via-cloudflare-doh-b6873a5b"}