Zone apex
Start of authority
Email
Serial
4207849484
Refresh
4h
Retry
30m
Expire
7d
Negative cache TTL
1h
Question and response
Question
dig fbsv.net. SOA
Answer
fbsv.net. 3600 SOA a.ns.facebook.com. dns.facebook.com. 4207849484 14400 1800 604800 3600
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0