DNS Propagation Checker
Compare a selected DNS record across several public resolvers to identify agreement, differences, and unavailable responses.
What this result means
Resolver agreement is a useful DNS troubleshooting signal, but it is not literal worldwide propagation proof. Recursive resolvers cache independently and authoritative DNS remains the source of record truth.
How this check works
Enter a hostname and choose the record type you are investigating. The checker compares normalized answers from Cloudflare, Google Public DNS, and Quad9, so answer ordering does not create a false disagreement. A resolver that cannot be reached is shown separately from a resolver that returned no record.
A matching answer usually means the selected public resolvers currently see the same result. Different answers can arise from cached records, geographically distributed DNS, split-horizon configuration, or a recent DNS change. Check the authoritative zone and its TTL before drawing conclusions.
This check only asks public recursive resolvers for the selected record type. It does not inspect a visitor's local resolver, clear any cache, test every region, or prove that a website will be reachable from every network.
Learn more: Using DNS over HTTPS for Troubleshooting →