Zone apex
Start of authority
Email
Serial
2002021861
Refresh
2h
Retry
30m
Expire
7d
Negative cache TTL
10m
Question and response
Question
dig ns.cernet.net. SOA
Answer
The response has no answer records.
Authority
cernet.net. 600 SOA ns2.net.edu.cn. hostmaster.dns.edu.cn. 2002021861 7200 1800 604800 600
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0