DNS Propagation Checker
ServerCheck a DNS record across 20 global resolvers at once.
How it works
Checks a DNS record against 20 public resolvers around the world at once, so you can see whether a change has propagated everywhere. After you edit a record, run this until every resolver shows the new value.
Note: CDN and geo-balanced domains (like google.com) legitimately return differentIPs per region — that's normal, not a propagation problem.
Try an example
About the DNS Propagation Checker
When you change a DNS record, the update spreads across the world's resolvers gradually. This free DNS propagation checker queries a record from about 20 public DNS servers around the globe at once, so you can see whether your change has propagated everywhere yet.
Each resolver is queried live and in parallel.
How to check DNS propagation
- Enter the domain and choose the record type.
- See the value returned by resolvers in different regions.
- When all locations agree on the new value, propagation is complete.
How long propagation takes
When you change a DNS record, resolvers around the world keep serving the old value until their cache expires — a window set by the record's TTL. Lower the TTL a day before a planned change and propagation is fast; with a long TTL it can take up to 24–48 hours. This tool queries many public resolvers at once so you can watch the change roll out.
Frequently asked questions
What is DNS propagation?
The time it takes for a DNS change to be reflected across resolvers worldwide, as cached old values expire based on the record's TTL.
How long does DNS propagation take?
Usually minutes to a few hours, but it can take up to 24-48 hours depending on the previous TTL and how aggressively resolvers cache.
How can I speed it up?
Lower the record's TTL before making a change so caches expire sooner; you can't force third-party resolvers to refresh early.
Why do different locations show different results?
Each resolver caches records independently and expires them on its own schedule, so during a change some return the new value and some the old. Once every location agrees, propagation is complete.