Robtex

Up: 202.223.212.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 202.223.214.0/24
Down right: 202.223.215.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
202.223.214.64	A+PTR	lib.asahikawa-u.ac.jp
202.223.214.64	A+PTR	lib.asahikawa-u.jp
202.223.215.249	A+PTR	dns.asahikawa-u.jp
202.223.215.249	A+PTR	mailgw.asahikawa-u.jp
202.223.215.249	A+PTR	dns.asahikawa-u.ac.jp
202.223.215.251	A+PTR	dns2.asahikawa-u.jp
202.223.215.251	A+PTR	ntp.asahikawa-u.jp
202.223.215.251	A+PTR	dns2.asahikawa-u.ac.jp