{"uid":"cap_x1tIG1VLTFwrKEz-u-qB0","slug":"dns-mx-via-nextdns-fbc35624","name":"dns-mx-via-nextdns","description":"MX records for a domain as answered by NextDNS (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. $0.01 per lookup.","url":"https://dns.intel.rallylive.ca/dns/mx/via/nextdns?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$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_ttPxsl2D0heTEZfMa2cA8","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 MX (mail exchanger) DNS records for a domain via NextDNS DNS-over-HTTPS, returning records, TTL, response code, DNSSEC validation status, and resolver answer time.","exampleAgentPrompt":"What MX records does NextDNS return for gmail.com, and did it validate DNSSEC? I want to see the full answer including TTL and response code.","exampleUseCases":[{"title":"Email deliverability troubleshooting","prompt":"My emails to clients are bouncing — can you check what MX records NextDNS is returning for acme.com and tell me the response code and whether DNSSEC is valid?"},{"title":"DNS propagation lag detection","prompt":"I just updated the MX records for mydomain.com. Can you query NextDNS and tell me what MX records it sees right now, including the TTL, so I can compare them to what Cloudflare returns?"},{"title":"Resolver filtering investigation","prompt":"I suspect NextDNS might be filtering MX records for protonmail.com — can you do a lookup via NextDNS and show me the records, response code, and how long the resolver took to answer?"}],"resultDescription":"Returns MX records (priority and mail server hostname), TTL, DNS response code (NOERROR, NXDOMAIN, or SERVFAIL), whether DNSSEC was validated by the NextDNS resolver, and the resolver's answer latency in milliseconds.","failureModes":["NXDOMAIN returned if domain does not exist","SERVFAIL if NextDNS cannot resolve the domain","Empty MX record set if domain has no mail exchangers configured","NextDNS may filter or block certain domains, returning NOERROR with no records","Payment failure if USDC balance is insufficient for the $0.01 fee","Network timeout if NextDNS is temporarily unreachable"],"whenToPreferThis":"Choose this endpoint when you specifically need to see how NextDNS resolves MX records — useful for comparing resolver behavior, detecting DNS filtering by NextDNS, diagnosing email delivery issues as seen from the NextDNS vantage point, or checking DNSSEC validation status. Prefer this over generic DNS tools when resolver-specific answers or resolver latency comparisons matter.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T12:47:32.854Z","isFirstParty":false,"canonicalSlug":"dns-mx-via-nextdns-fbc35624"}