What this checker tests
- Google Public DNS response
- Cloudflare resolver response
- Answer agreement
- A, AAAA, MX, TXT, CNAME, or NS records
Compare current DNS answers from independent public recursive resolvers without pretending to provide worldwide monitoring.
Recursive resolvers cache records according to TTL.
Different answers can be normal shortly after a change.
This tool compares independent public resolvers; it is not a network of geographic probes.