Zone apex
Start of authority
Email
Serial
1768972738
Refresh
5m
Retry
10m
Expire
1d
Negative cache TTL
3m
Question and response
Question
dig mail.qq.com. SOA
Answer
mail.qq.com. 180 SOA qq.com. webmaster.qq.com. 1768972738 300 600 86400 180
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0