os12-dnsic1-dns1.anser.ne.jp.
Question and response
Question
dig 250.128.57.160.210.in-addr.arpa. PTR
Answer
250.128.57.160.210.in-addr.arpa. 86400 PTR os12-dnsic1-dns1.anser.ne.jp.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1220, xrcode 0, version 0, flags 0