DNS lookup failure for .mil

We are currently running into issues pulling certs that seem related. This recently started happening but only for a particular domain. Is there any way to know which DNS endpoint you are using to validate so we can investigate? I have verified the hostname is valid from as many DNS servers as i can find, and the same process works for other domains on the same set of hosts.

IMPORTANT NOTES:

  • The following errors were reported by the server:

    Domain: xxxxx.mil
    Type: dns
    Detail: DNS problem: query timed out looking up A for
    xxxxx.mil; DNS problem: query timed out looking up
    AAAA for xxxxx.mil