DNS Propagation Checker
Compare what public resolvers around the world currently return with the authoritative answer, and see how long cached data will last.
What this checks
- The current answer from the authoritative nameservers
- Answers from 8 public resolvers run by different operators
- Which resolvers still hold old or "no record" answers, and for how long
- SERVFAIL splits that point to DNSSEC problems
- The TTLs that control how long changes take
How to read the results
- Pass
- The check succeeded based on the observed responses.
- Warning
- Works now, but is risky, unusual or worth reviewing.
- Fail
- A problem was observed directly in the responses.
- Inconclusive
- Not enough evidence — for example a server did not respond.