Examples:
Comparison mode checks independent public resolvers and authoritative DNS. It does not pretend to be a geographic probe; true country-by-country testing requires remote probe nodes.
DNS INTELLIGENCE
Professional DNS Checker
Inspect DNS records, compare public resolvers and see whether they match the domain’s authoritative name servers.
Supported records
A, AAAA, CNAME, MX, NS, TXT, SOA, SRV, CAA, PTR, DS, DNSKEY
Resolver comparison
Google, Cloudflare, Quad9, OpenDNS and AdGuard are queried in parallel with latency and status per resolver.
Authoritative reference
When possible, the checker also queries authoritative name servers directly and compares recursive resolver answers against them.