DNS Propagation Checker
Changed a DNS record? Check whether it has propagated by querying 16 public DNS resolvers around the world at once. If they all agree, you're fully propagated.
What is DNS propagation?
When you change a DNS record (for example point your domain to a new server, or update an MX record for email), the change isn't instant everywhere. Resolvers around the world cache the old answer until its TTL (time-to-live) expires, so different networks may see the old or the new value for minutes to 48 hours.
This tool asks 16 independent public resolvers — Google, Cloudflare, Quad9, OpenDNS, Yandex, AdGuard and more, spread across regions — for the same record at the same time. When every resolver returns the same answer, your change has fully propagated. While they disagree, propagation is still in progress. To speed future changes up, lower the record's TTL a day before you make the change. A browser-only tool can't do this — it needs a server that can query each resolver directly.