{"uid":"cap_I3axBLlIxyaj_eP-P3lEN","slug":"dns-a-via-dnssb-5912a341","name":"dns-a-via-dnssb","description":"A records for a domain as answered by DNS.SB (DNS over HTTPS): the records, TTL, response code (NOERROR/NXDOMAIN/SERVFAIL), whether the resolver validated DNSSEC, and the resolver's answer time. Compare resolvers to spot propagation lag, filtering or split-horizon answers. $0.01 per lookup.","url":"https://dns.intel.rallylive.ca/dns/a/via/dnssb?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$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_OMpAJIUvbBTIpCU6lnPD5","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":"Resolves DNS A records for a domain using DNS.SB's DNS-over-HTTPS resolver, returning records, TTL, response code, DNSSEC validation status, and answer time.","exampleAgentPrompt":"Can you look up the A records for github.com using DNS.SB and tell me what IP addresses it resolves to, whether DNSSEC was validated, and how fast the resolver answered?","exampleUseCases":[{"title":"Detecting DNS propagation lag","prompt":"Has the new A record for mycompany.com propagated to DNS.SB yet? I updated it an hour ago and want to know if DNS.SB is returning the new IP address or still the old one."},{"title":"Spotting resolver-based filtering","prompt":"Check if example-blocked-site.com returns a valid A record or NXDOMAIN when queried through DNS.SB — I want to see if DNS.SB is filtering it."},{"title":"Comparing split-horizon DNS answers","prompt":"Look up the A records for internal.acme.com via DNS.SB so I can compare the response against what Google 8.8.8.8 returns and see if there's a split-horizon DNS setup."}],"resultDescription":"Returns the A records (IPv4 addresses) for the queried domain as answered by DNS.SB, including the TTL, the DNS response code (NOERROR, NXDOMAIN, or SERVFAIL), whether the resolver performed DNSSEC validation, and the resolver's answer latency in milliseconds.","failureModes":["Domain does not exist — returns NXDOMAIN response code","DNS.SB resolver is temporarily unavailable — returns SERVFAIL","Network timeout reaching DNS.SB upstream — may return error or no answer","Domain has no A records (IPv6-only or CNAME-only) — empty answer section with NOERROR","Invalid or malformed domain name input — likely returns error or SERVFAIL"],"whenToPreferThis":"Use this endpoint when you specifically want to see how DNS.SB resolves A records for a domain — especially when comparing resolver behavior across providers (Google, Cloudflare, DNS.SB, AliDNS) to detect propagation lag, geographic or ISP-level filtering, or split-horizon DNS configurations. Prefer this over generic DNS tools when you need per-resolver granularity including DNSSEC validation state and answer latency.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T18:56:02.447Z","isFirstParty":false,"canonicalSlug":"dns-a-via-dnssb-5912a341"}