What is the refresh rate for the DNS service?

I know that the refresh rate for the master zone is 15 minutes, i.e, the servers apply changes every 15 minutes.

What is the refresh rate for slave zones?

4 Replies

They take updates when you send them a NOTIFY, and at the SOA record's configured refresh interval.

The authoritative servers also do a certain degree of caching, so some clients may get some older records for some amount of time.

When I send a NOTIFY, will the server refresh immediately or every 15 minutes like a master zone?

I see. Thank you for the information.


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