Zone apex
Start of authority
Email
Serial
2017014414
Refresh
1h
Retry
30m
Expire
7d
Negative cache TTL
1h 30m
Question and response
Question
dig dns-servers.vn. SOA
Answer
dns-servers.vn. 43200 SOA dns-master.vnnic.vn. postmaster.vnnic.vn. 2017014414 3600 1800 604800 5400
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0