{"uid":"cap_gupYWr3eGq8FKkEu8svqi","slug":"dns-txt-record-lookup-for-vpn-subdomain-8d9830bb","name":"DNS TXT Record Lookup for VPN Subdomain","description":"TXT record of vpn.<domain>: looks up the vpn host under the domain you give (TXT via Cloudflare DoH) and reports whether it exists, its records and TTL. Quick existence check for common hosts like vpn without enumerating subdomains. $0.01 per lookup.","url":"https://dns.intel.rallylive.ca/dns/host/vpn/txt?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","$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_G0lqTnntmt_klZFzsyMWI","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 TXT DNS records for the vpn.<domain> subdomain using Cloudflare DNS over HTTPS (DoH) and reports existence, records, and TTL.","exampleAgentPrompt":"Can you check if example.com has a VPN subdomain set up — look up the TXT records for vpn.example.com via Cloudflare DoH and tell me if it exists and what the TTL is?","exampleUseCases":[{"title":"Verify VPN host before connecting","prompt":"Before I try to connect to the company VPN, can you check if vpn.acmecorp.com actually exists in DNS by looking up its TXT records?"},{"title":"Security audit of competitor infrastructure","prompt":"I'm doing a passive recon report on techfirm.io — can you check whether they have a vpn subdomain configured by looking up TXT records for vpn.techfirm.io?"},{"title":"IT onboarding domain validation","prompt":"We're onboarding a new client domain clientbiz.net — can you confirm whether vpn.clientbiz.net has any TXT records set up in DNS so we know if a VPN host is already configured?"}],"resultDescription":"Returns whether the vpn.<domain> subdomain exists in DNS, its TXT record values, the TTL of those records, and the DNS response code (e.g. NOERROR or NXDOMAIN) as resolved via Cloudflare DoH.","failureModes":["Domain does not exist — NXDOMAIN returned with no records","vpn subdomain not configured — empty record set returned","Invalid domain input causing query failure","Cloudflare DoH upstream timeout or unavailability","Malformed domain string causing resolution error"],"whenToPreferThis":"Use this endpoint when you need a quick, passive existence check for a VPN subdomain on a specific domain without performing active subdomain enumeration. It is ideal for security auditing, IT inventory checks, or pre-connection validation where only the vpn.<domain> host is of interest and Cloudflare DoH is an acceptable resolver.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-21T00:45:49.134Z","isFirstParty":false,"canonicalSlug":"dns-txt-record-lookup-for-vpn-subdomain-8d9830bb"}