Zone apex
Start of authority
Email
Serial
20161712
Refresh
10m
Retry
5m
Expire
1h
Negative cache TTL
1m
Question and response
Question
dig m320.mail.163.com. SOA
Answer
m320.mail.163.com. 5 CNAME hdweb.mail.ntes53.netease.com.
Authority
ntes53.netease.com. 60 SOA ns1-ntes53.netease.com. admin.nease.net. 20161712 600 300 3600 60
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0