DNS Propagation Checker

Check a domain's DNS records against public resolvers around the world to see if changes have propagated.

Domain name

Record type

Expected value (optional)

22 public DNS resolvers in 10 countries are asked at the same time. Answers are cached for one minute.

Continue your work

DNS Lookup — See every record type for the domain in one lookup.
Domain DNS Health Checker — Check the whole DNS setup once the change has spread.

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Clear instructions

Find steps, examples and limitations below.

Use online

Open the tool in a supported web browser.

Free to use

No sign-up required. Tool-specific limits may apply.

How to use the DNS Propagation Checker

Check a domain's DNS records against public resolvers around the world to see if changes have propagated.

1 Enter the domain name and choose the record type you changed, such as A for a new server IP or MX for new mail servers.
2 Optionally type the value you expect, such as the new IP address, so each resolver is marked as matching or different.
3 Click Check propagation and read the percentage and the table. Run the check again later if some resolvers still show the old value.

Example and practical tips

After moving a website to a new host at 203.0.113.10, choose A, enter 203.0.113.10 as the expected value and check. If 15 of 22 resolvers match, the change is still spreading; old answers disappear once their TTL expires.

Frequently asked questions

How long does DNS propagation take?

Most changes are visible within minutes to a few hours. The old record’s TTL (time to live) decides how long resolvers may keep it cached, so lowering the TTL a day before a change makes it spread faster.

Why do resolvers show different IP addresses?

Large sites and CDNs use geo-routing, answering each region with a nearby server. Different answers are normal for them; enter an expected value to check a specific change.

Where are the resolvers?

The list includes public resolvers run in the United States, Canada, Europe, Russia, China, South Korea, Australia and Brazil. Anycast providers answer from their site nearest our server.