Zone apex
Start of authority
Email
Serial
1771852506
Refresh
1h
Retry
15m
Expire
7d
Negative cache TTL
5m
Question and response
Question
dig ncopenbook.gov. SOA
Answer
The response has no answer records.
Authority
gov. 300 SOA a.ns.gov. dns.cloudflare.com. 1771852506 3600 900 604800 300
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0