Robtex

Up: 218.223.4.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 218.223.4.0/25
Down right: 218.223.4.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
218.223.4.44	PTR	44.4.bbsec.co.jp
218.223.4.68	PTR	ns2.inoc.bbsec.co.jp
218.223.4.68	A	ns2.info-monitoring.com
218.223.4.68	A	ns2.virus-taisaku.jp
218.223.4.70	A	ww70.inoc.bbsec.co.jp
218.223.4.87	A	ww87.inoc.bbsec.co.jp