If Edge DNS information appears incorrect
If you have DNS NOTIFY configured on your primary name servers, they should notify the zone transfer agents when the zone file has changed and the zone transfer will be initiated.
If you don't have DNS NOTIFY configured on your primary name servers, there may be some latency between the time you update your master zone file and the time the data is propagated to the Edge DNS name servers.
If you are seeing this latency symptom, check the following:
- Ensure that the correct information is in the primary zone file on your primary name server.
- If you do not have DNS notify turned on,
the zone transfer agents check with your primary name server at the refresh interval
listed in your start of authority (SOA) record. The refresh interval is the second numeric
field (in seconds) in your SOA record. For
example.com 86400 IN SOA ns1.example.com.hostmaster.example.com. ( 2002010402 10800 3600 604800 86400 )
|86400||TTL (time to live)|
|IN||Internet category of records|
|SOA||Start of authority (a zone’s master record)|
|ns1.example.com||One master authoritative name server|
|hostmaster.example.com||Current customer contact information|
|2002010402||Serial number (higher is newer)|
|10800||Refresh frequency (wait time in seconds to check with master)|
|604800||Expiration delay (seconds to continue handing out answers if unable to check for updates)|
|86400||Negative TTL (The time to wait after getting a response saying it does not exist)|
In this example, the refresh interval is 10800 seconds (= 180 minutes = 3 hours).
- Log into Control Center.
- Go to .
On the Zone list
- View the zone transfer status to look for any error messages related to a zone transfer from your authoritative name server.
- Click the zone name and verify that the master name server IP address for your domain is correct.
- Verify that your network environment allows zone transfers from the zone transfer agent IP addresses.
Try querying each of the Edge
name servers serving your domain to see if they all return the same information.
The Edge DNS system has built-in fault tolerance to account for the cases in which one zone transfer agent may not be able to reach one of the Edge DNS name servers; while data should not be inconsistent across the name servers, it is helpful to have this data point. You can query a specific name server using dig at the command line: dig @nameserver-ip hostname