Zone apex
Start of authority
Email
Serial
2017131642
Refresh
1d
Retry
2h
Expire
41d 16h
Negative cache TTL
5m
Question and response
Question
dig lrn.com. SOA
Answer
lrn.com. 86400 SOA udns1.ultradns.net. hostmaster.lrn.com. 2017131642 86400 7200 3600000 300
Authority
lrn.com. 86400 NS udns1.ultradns.net.
lrn.com. 86400 NS udns2.ultradns.net.
Additional
. 0 OPT ; payload 4096, xrcode 0, version 0, flags 0