Check DNS records from recursive or authoritative servers.
AuthLookup.com queries public DNS for a domain or host using Cloudflare, Google, Quad9, or its authoritative nameservers. Compare resolver responses, check propagation, inspect TTLs, and confirm what the source-of-truth servers return.
A recursive resolver follows DNS referrals and may return a cached answer on behalf of the requester.
A DNS service that receives a query and returns an answer, often using cached data or by contacting nameservers.
The period while updated DNS data and cached resolver views become consistent.
Time-to-live values, in seconds, tell resolvers how long an answer may be cached.