Our Route name servers will be able to authoritatively resolve DNS queries to your zone once the following conditions are met:
- The secondary zone in question has been deployed to our Route name servers.
- The zone has been delegated to our vanity name servers.
If your master name servers are unavailable, our Route solution will continue to serve the last transferred zone regardless of whether the requested record's TTL has expired. This differentiates our service from traditional Master/Slave DNS systems where slave name servers stop serving zones when the master name server remains unavailable beyond a record's TTL.
This design ensures that stale DNS requests are resolved efficiently even when your master name server is unavailable. In the following illustration, notice how DNS requests handled by our name servers are never forwarded to your master name server.
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Edgecast CDN