Zone apex
Start of authority
Email
Serial
21
Refresh
3h
Retry
15m
Expire
7d
Negative cache TTL
15m
Question and response
Question
dig 176.50.121.27.in-addr.arpa. SOA
Answer
176.50.121.27.in-addr.arpa. 300 SOA dns1.broadline.ne.jp. dns-info.broadline.ne.jp. 21 10800 900 604800 900
Authority
176.50.121.27.in-addr.arpa. 300 NS ns002-73lz52amxllg72tx.7.d-53.jp.
176.50.121.27.in-addr.arpa. 300 NS ns002-73lz52amxllg72tx.7.d-53.net.
176.50.121.27.in-addr.arpa. 300 NS ns002-73lz52amxllg72tx.7.d-53.info.
Additional
. 0 OPT ; payload 1220, xrcode 0, version 0, flags 0