DNS Asynchronous Prefresh

This behavior can only be configured for you by ​Akamai​ Professional Services and isn't directly accessible in the ​Control Center​'s Property Manager application. You can review the behavior options and work with your account representative to have them implemented.

With DNS Prefresh enabled, the edge servers refresh your origin DNS record independent from receiving a request from end-users, and prior to the expiration of your origin DNS resolution's TTL.


The DNS name might fail to prefresh, as there is a limit on the number of prefreshes the ​Akamai​ server can perform per second. This limit might be reached due to the large number of names the server is trying to maintain (origins, maps, etc.).

Features and options

FieldWhat it does
EnableEnables or disables the behavior.
DelaySet the delay before initiating an asynchronous refresh of the DNS resolution.
TimeoutSet the timeout for prefreshing the DNS entries if there have been no requests to that domain name.