DNS Propagation Checker

How to use the propagation checker

1. Enter the domain or subdomain you changed, such as example.com or www.example.com.
2. Choose the record type you changed.
3. Press Check propagation. We ask 13 public DNS resolvers at the same moment and compare their answers.

What "propagation" really is

DNS changes do not travel across the internet. When you update a record, your DNS host's servers answer with the new value immediately. Resolvers around the world, however, keep the old answer in their cache until its TTL (time to live) runs out, then ask again and get the new one. "Propagation" is simply those caches expiring at different times.

Reading the results

The TTL column shows how many seconds the resolver will keep its answer. A resolver showing an old value will switch within that time at the latest.

The resolvers we ask

Cloudflare, Google Public DNS, Quad9, OpenDNS, AdGuard DNS, Mullvad, NextDNS, Control D, CleanBrowsing, DNS.SB, TWNIC Quad101, AliDNS and DNSPod. Together they serve a large share of the world's DNS traffic. Most run servers in many countries and answer from the one nearest to us. Compare them in public DNS servers compared.

Speeding up a DNS change

• Lower the TTL in advance. A day before a planned change, set the record's TTL to 300 seconds; after the change, raise it again.
• Flush your own cache to see the change on your computer. See how to flush your DNS cache.
• Name server changes take longest. Changing NS records at the registrar can take up to 48 hours because the top-level domain servers use long TTLs.

Frequently asked questions

How long does DNS propagation take?

As long as the old record's TTL: often 5 minutes to an hour, and up to 48 hours for name server changes.

Why do some resolvers show different IP addresses?

Content delivery networks and load balancers return different addresses on purpose, depending on where the question comes from. Several different answers can all be correct.

Can I force resolvers to update?

Not in general. Cloudflare and Google offer cache purge forms for their own resolvers; everyone else updates when the TTL expires.

Last updated October 21, 2026 by the FindMyIPLocation team.