What is the Global DNS Propagation Checker?
Query the same DNS record for a domain against 17 well-known public resolvers scattered across different countries at once, to see whether a recent change has reached all of them yet or only some.
How it works
For each of the 17 resolvers, the backend spins up a separate resolver instance pinned to that provider's IP address and queries it in parallel. The responses are grouped to find the most common answer, and any resolver that disagrees with it — or returns an error — is flagged individually on the map and in the results table.
SysAdmin & security use cases
- Watching a DNS record change roll out globally right after updating it at your registrar.
- Figuring out why users in one country are still hitting your old server after a migration.
- Confirming an MX record change has reached major resolvers before decommissioning the old mail server.
- Diagnosing a 'DNS isn't updating' report by seeing exactly which resolvers still hold the old value.