{"uid":"cap_U9iSXRFsvMFxAtjOOl1Pw","slug":"lookproof-dns-ns-checker-a640e262","name":"Lookproof DNS NS Checker","description":"Check SPF, DMARC, DKIM, MTA-STS, DNSSEC and more, with results that explain what was found and why. Free browser checks and a pay-per-request API with x402.","url":"https://api.lookproof.dev/v1/dns/ns?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","HEAD","DELETE"],"type":"string"},"queryParams":{"type":"object","title":"DomainInput","required":["domain"],"properties":{"domain":{"type":"string","title":"Domain","examples":["example.com"],"maxLength":1024,"minLength":1}},"additionalProperties":false}},"additionalProperties":false}}},"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_vmv8MttaBUfmm_mgS_5eW","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":"Retrieves and analyzes a domain's name server set, including NS records, IPv4/IPv6 addresses for up to eight servers, glue record needs, and DNS redundancy information.","exampleAgentPrompt":"Can you check the name servers for example.com — I want to see all the NS records, their IPv4 and IPv6 addresses, and whether any of them fail to resolve or share the same /24 subnet?","exampleUseCases":[{"title":"DNS redundancy audit for a zone","prompt":"Can you check the name servers for acmecorp.com and tell me if they're properly redundant — I want to know if any share the same /24 or /48 subnet, and whether all of them actually resolve?"},{"title":"Reviewing delegation before domain transfer","prompt":"I'm about to transfer mybusiness.net to a new registrar — can you pull the current NS records and their IP addresses so I can confirm the delegation looks correct before I initiate the transfer?"},{"title":"Debugging DNS outage with unresolvable NS","prompt":"Some users are having trouble reaching our site at shop.example.org — can you look up the name servers and flag any that aren't resolving or are missing IPv6 addresses?"}],"resultDescription":"Returns the complete NS record set for the queried domain, including the hostnames of up to eight name servers, their IPv4 (A) and IPv6 (AAAA) addresses, identification of servers that fail to resolve, subnet groupings (/24 for IPv4, /48 for IPv6), TLD groupings across all name servers, and glue record requirements for in-zone name servers.","failureModes":["Domain does not exist or has no NS records — returns empty or error response","Domain input missing or malformed — 400 bad request","Name servers exist but none resolve — servers listed as non-resolving","Payment not provided or insufficient — 402 Payment Required","Rate limiting or upstream resolver failures — 429 or 5xx response"],"whenToPreferThis":"Use this endpoint when you need a detailed, structured breakdown of a domain's name server infrastructure — specifically when assessing DNS redundancy, delegation correctness, glue record needs, or IPv6 coverage across the NS set. It is more thorough than a simple NS record lookup because it also resolves addresses, groups by subnet and TLD, and flags unresolvable servers. Prefer it over generic DNS tools when an agent needs to audit or validate DNS infrastructure programmatically.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-31T18:39:56.098Z","isFirstParty":false,"canonicalSlug":"lookproof-dns-ns-checker-a640e262"}