All responding resolvers returned the same set of values for the selected record type.
DNS diagnostics
DNS propagation checker
Compare the answer returned by several major public recursive resolvers to spot cached or inconsistent DNS changes.
Quick guide
Why DNS answers can differ
DNS changes are cached according to TTL values. During a change, one resolver may still have an older answer while another has already refreshed its cache.
Public resolvers use anycast networks, so the resolver IP is global rather than tied to one city. This tool compares independent resolver operators rather than pretending each result represents a specific location.
The resolver results differ. Check the TTL and confirm your authoritative DNS configuration.
A resolver responded successfully but returned no record of the selected type.
The same DNS question is sent to several public recursive resolvers so you can compare their currently cached answers and TTLs.
- Checking a recent DNS change
- Spotting resolver disagreement
- Seeing whether stale cached answers are still in use
Terminal shortcut
Prefer the command line?
Compare answers from major public DNS resolvers.
> propagation example.com A
Run in Terminal ->