mailmag-prd.tokai-cs.ne.jp.
Question and response
Question
dig 180.128.54.121.27.in-addr.arpa. PTR
Answer
180.128.54.121.27.in-addr.arpa. 86400 PTR mailmag-prd.tokai-cs.ne.jp.
Authority
128.54.121.27.in-addr.arpa. 86400 NS ns002-3n3fpt6phv8cl6s1.3.d-53.jp.
128.54.121.27.in-addr.arpa. 86400 NS ns002-3n3fpt6phv8cl6s1.3.d-53.net.
128.54.121.27.in-addr.arpa. 86400 NS ns002-3n3fpt6phv8cl6s1.3.d-53.info.
Additional
. 0 OPT ; payload 1220, xrcode 0, version 0, flags 0