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DNS Propagation Checker

See whether a DNS change has reached public resolvers.

The name you enter is sent to UtilSlate’s server, which asks nine public resolvers and the domain’s own name servers. Nothing is stored.

What you get

  • Nine resolvers
  • The source of truth
  • When it will update

Questions

What is DNS propagation?

When you change a record, the domain’s name servers have the new answer straight away. Resolvers that looked it up before keep their copy until its time to live (TTL) runs out, so some people see the old answer for a while. Nothing is really “sent round the world”: caches simply expire.

Does this check from different countries?

No, and it says so honestly. The questions all leave from Cloudflare’s network near UtilSlate’s server; big resolvers answer from many locations, and you see the answers their nearest location has. It shows which resolvers still hold an old answer, not what every country sees.

How can I make changes show up faster?

Lower the record’s TTL (to 300 seconds, say) a day before the change; after it, raise it again. Some resolvers let you flush their cache for a name (Google and Cloudflare have pages for it).

Is it free? Do I need an account?

It is free to use and there is nothing to sign up for. There are no watermarks and no daily limits.

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