Zone apex
Start of authority
Email
Serial
2026011501
Refresh
3h
Retry
30m
Expire
28d
Negative cache TTL
1d
Question and response
Question
dig 137.163.in-addr.arpa. SOA
Answer
137.163.in-addr.arpa. 86400 SOA ns2.nttcom.ne.jp. root.nttcom.ne.jp. 2026011501 10800 1800 2419200 86400
Authority
137.163.in-addr.arpa. 86400 NS ns2.nttcom.ne.jp.
137.163.in-addr.arpa. 86400 NS auth1.ns.gin.ntt.net.
137.163.in-addr.arpa. 86400 NS auth2.ns.gin.ntt.net.
137.163.in-addr.arpa. 86400 NS ns011-hgod4d2k6vl012gr.h.d-53.jp.
137.163.in-addr.arpa. 86400 NS ns011-hgod4d2k6vl012gr.h.d-53.net.
137.163.in-addr.arpa. 86400 NS ns011-hgod4d2k6vl012gr.h.d-53.info.
Additional
. 0 OPT ; payload 1220, xrcode 0, version 0, flags 0