How long does DNS propagation take?

DNS propagation typically takes between a few minutes and 48 hours. The exact time depends on the TTL (Time to Live) value set on the record, your DNS provider's update speed, and how aggressively ISPs and resolvers cache records. Lowering TTL to 300 seconds before making a change can speed up propagation.

Why do some users see new DNS records while others still see old ones?

Different users query different DNS resolvers (Google 8.8.8.8, Cloudflare 1.1.1.1, their ISP's resolver, etc.). Each resolver has its own cache with the old record until the TTL expires. Once a resolver's cache expires, it fetches the new record. This is why users in different locations or using different ISPs see the change at different times.

How can I speed up DNS propagation?

To speed up DNS propagation: (1) Lower the TTL on your records to 300 seconds at least 24 hours before making a change. (2) After the change propagates, raise the TTL back to a higher value like 3600 seconds. (3) Use a fast DNS provider. Note that you cannot force other resolvers to flush their caches early — you can only control your own TTL.

DNS Propagation

DNS propagation is the process of DNS records being distributed across all DNS servers worldwide. When you change your DNS records, it can take time for all servers to update.

Every resolver keeps the answer it cached until its own copy of the TTL runs out.

Why Does Propagation Take Time?

DNS servers cache records to improve performance. When you update a DNS record, servers that have the old record cached will continue serving the old data until their cache expires (based on the TTL value).

Typical Propagation Time

DNS propagation typically takes 24-48 hours, though it can be faster (a few minutes) or slower (up to 72 hours) depending on:

TTL values set on your DNS records
Your DNS provider's propagation speed
Internet service providers' caching policies
Geographic location of users

TTL (Time to Live)

TTL determines how long a DNS record should be cached before being refreshed. Lower TTL values (like 300 seconds = 5 minutes) mean faster propagation but more queries to your DNS server.

Checking Propagation

Use our DNS Propagation Checker to see which servers have your updated records. This helps verify that changes have propagated correctly.

Try it on your domain

See the theory in practice — run a DNS Propagation Checker for your own domain.