DNS response comparison
See how four resolvers answer the same name and record type. Useful after changing hosting, DNS or email settings.
The queried name is sent to the resolvers used by this tool. Results are not stored. Each comparison makes four queries, at most two at a time, under the existing API limits.
What this comparison shows
Queries originate from our server and go to Google, Cloudflare, Quad9 and OpenDNS. They are not measurements from four countries or proof of worldwide propagation. Caches, TTLs, load balancing and geographic responses can cause legitimate differences. Matching answers now do not mean every user sees the same result.
Technical references: Google Public DNS · RFC 1034