Zone apex
Start of authority
Email
Serial
2019052001
Refresh
2h
Retry
20m
Expire
7d
Negative cache TTL
1d
Question and response
Question
dig 11.100.145.in-addr.arpa. SOA
Answer
11.100.145.in-addr.arpa. 3600 SOA nsauth1.surfsara.nl. dns-admin.surfsara.nl. 2019052001 7200 1200 604800 86400
Authority
11.100.145.in-addr.arpa. 3600 NS nsauth1.surfsara.nl.
11.100.145.in-addr.arpa. 3600 NS nsauth2.surfsara.nl.
11.100.145.in-addr.arpa. 3600 NS ns1.surfnet.nl.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0