Robtex

Up: 133.138.0.0/15
Can't show all results, try to descend to a more specific CIDR
Down left: 133.139.0.0/17
Down right: 133.139.128.0/17
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
133.139.0.0	PTR	ricoh-net.ricoh.co.jp
133.139.18.31	A+PTR	ns1.unics.ricoh.com
133.139.18.31	A	mgmt.ns1.ty1.rwan.unics.ricoh.com
133.139.18.32	A	ns2.unics.ricoh.com
133.139.18.32	A	mgmt.ns2.ty1.rwan.unics.ricoh.com
133.139.20.51	A	ns1.jp.ricoh.com
133.139.20.51	A	ns.ricoh.co.jp
133.139.20.51	A	ns.ricoh.jp
133.139.20.60	A	mail-gw1.jp.ricoh.com
133.139.20.91	PTR	mail-gw101.jp.ricoh.com
133.139.20.151	A	jrits.co.jp
133.139.21.120	PTR	120.21.139.133.unics.ricoh.com
133.139.21.120	A	support-download.com
133.139.21.120	A	op-drv-ds1.support.ricoh.com
133.139.21.121	PTR	121.21.139.133.unics.ricoh.com
133.139.21.122	PTR	122.21.139.133.unics.ricoh.com
133.139.21.147	A	jrits.co.jp
133.139.21.147	A	www.jrits.co.jp
133.139.24.58	A	ns488.de-fi.com
133.139.24.58	A	ns479.sakurai-koumuten.com
133.139.24.58	A	srv169.nagano-takao.com
133.139.25.118	A	lib.nakamura-u.ac.jp
133.139.25.121	A	morioka-opac.limedio.ricoh.co.jp
133.139.28.20	PTR	20.28.139.133.unics.ricoh.com
133.139.28.20	A	itkeeper.ricoh.co.jp
133.139.28.21	A	www.grblog.jp
133.139.28.21	A	grblog.jp
133.139.34.119	PTR	119.34.139.133.unics.ricoh.com
133.139.34.119	A	blog.takahiro-matsukawa.com
133.139.34.128	PTR	128.34.139.133.unics.ricoh.com
133.139.34.128	A	www.nic.ricoh
133.139.34.128	A	nic.ricoh
133.139.34.138	PTR	138.34.139.133.unics.ricoh.com
133.139.34.138	A	news.ricoh-imaging.co.jp
133.139.44.36	A	printout.jp
133.139.44.36	A	www.printout.jp
133.139.44.45	A	cinf.netricoh.com
133.139.44.72	A	ptnr-crn.ricoh.co.jp
133.139.44.150	A	ns488.de-fi.com
133.139.55.100	A	ucs.ricoh.com
133.139.56.31	PTR	31.56.139.133.unics.ricoh.com
133.139.56.31	A	ns3.unics.ricoh.com
133.139.56.32	PTR	32.56.139.133.unics.ricoh.com
133.139.56.32	A	ns4.unics.ricoh.com
133.139.65.134	A	hapi.start.ricoh.com
133.139.65.135	A	download.mlp.ricoh.com
133.139.88.51	PTR	51.88.139.133.unics.ricoh.com
133.139.88.51	A	ricohigw.ricoh.co.jp
133.139.88.51	A	ns2.jp.ricoh.com
133.139.108.20	PTR	20.108.139.133.unics.ricoh.com
133.139.108.20	A	ricohmds.com
133.139.108.20	A	ricohservicetickets.com
133.139.108.21	PTR	21.108.139.133.unics.ricoh.com
133.139.108.21	A	configreader.com