Tools·DNS & domain
DNS propagation
Query a domain across 10 public resolvers (Cloudflare, Google, Quad9, OpenDNS, AdGuard, Verisign, Yandex, Level3, CleanBrowsing, ControlD) in parallel and see whether a zone change has landed everywhere.
Queries 10 public resolvers (Cloudflare, Google, Quad9, OpenDNS, AdGuard, Verisign, Yandex, Level3, CleanBrowsing, ControlD) in parallel over UDP:53 and reports what each one sees. Useful for confirming a zone change has landed everywhere before you cut over a DNS-driven migration.