Zone apex
Start of authority
Email
Serial
2013010301
Refresh
3h
Retry
1h
Expire
30d
Negative cache TTL
1d
Question and response
Question
dig 65-123.228.5.72.in-addr.arpa. SOA
Answer
65-123.228.5.72.in-addr.arpa. 86400 SOA udns1.ultradns.net. operations.casabi.com. 2013010301 10800 3600 2592000 86400
Authority
65-123.228.5.72.in-addr.arpa. 600 NS udns1.ultradns.net.
65-123.228.5.72.in-addr.arpa. 600 NS udns2.ultradns.net.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0