Robtex

Up: 157.7.230.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 157.7.231.0/25
Down right: 157.7.231.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
157.7.231.16	A+PTR	dw-smtp03.deskwing.net
157.7.231.52	A+PTR	smtp20611.zero.jp
157.7.231.64	PTR	unused-157-7-231-064.interq.or.jp
157.7.231.64	A	www.uniflow.co.jp
157.7.231.64	A	dwcs-1.net
157.7.231.65	A	kanmuri.com
157.7.231.65	A	www.kanmuri.com
157.7.231.66	PTR	unused-157-7-231-066.interq.or.jp
157.7.231.66	A	www.kunimine.co.jp
157.7.231.66	A	kunimine.co.jp
157.7.231.67	PTR	unused-157-7-231-067.interq.or.jp
157.7.231.67	A	dwcs-2.net
157.7.231.68	PTR	unused-157-7-231-068.interq.or.jp
157.7.231.68	A	www.hoosiers.co.jp
157.7.231.68	A	hoosiers.co.jp
157.7.231.69	PTR	unused-157-7-231-069.interq.or.jp
157.7.231.69	A	chinretu.co.jp
157.7.231.69	A	www.chinretu.co.jp
157.7.231.71	PTR	unused-157-7-231-071.interq.or.jp
157.7.231.71	A	palec.co.jp
157.7.231.71	A	www.palec.co.jp
157.7.231.72	PTR	unused-157-7-231-072.interq.or.jp
157.7.231.72	A	www.tokyo-sousai.co.jp
157.7.231.73	PTR	unused-157-7-231-073.interq.or.jp
157.7.231.73	A	www.human-life.co.jp
157.7.231.75	PTR	unused-157-7-231-075.interq.or.jp
157.7.231.75	A	www.fukushimagp.com
157.7.231.76	PTR	unused-157-7-231-076.interq.or.jp
157.7.231.76	A	truckmate.jp
157.7.231.77	PTR	unused-157-7-231-077.interq.or.jp
157.7.231.77	A	www.tiger-inc.co.jp
157.7.231.81	PTR	unused-157-7-231-081.interq.or.jp
157.7.231.81	A	houdou-shisetsu.com
157.7.231.82	A	securegate.jp
157.7.231.82	A	www.securegate.jp
157.7.231.87	PTR	unused-157-7-231-087.interq.or.jp
157.7.231.93	PTR	unused-157-7-231-093.interq.or.jp
157.7.231.93	A	synca-hd.com
157.7.231.112	PTR	www13.gmoserver.jp
157.7.231.112	A	darts-spot.com
157.7.231.112	A	kankyo-cr.com
157.7.231.114	A	*.selfine.info
157.7.231.114	A	ftp.hotsexzone.com
157.7.231.114	A	selfine.info
157.7.231.115	PTR	pop13.gmoserver.jp
157.7.231.115	A	pop.tsjapan.net
157.7.231.115	A	imap.8354.com
157.7.231.116	A+PTR	mx13.gmoserver.jp
157.7.231.116	A	mx.nichiren-syu.com
157.7.231.116	A	mx.munesan.jp
157.7.231.117	PTR	smtp13.gmoserver.jp
157.7.231.117	A	smtp.ishiisika.com
157.7.231.117	A	smtp.oohira-hachimangu.biz
157.7.231.124	A+PTR	smtp2127.gmoserver.jp
157.7.231.124	A	usayami.com
157.7.231.124	A	otona-no-nagoya.com
157.7.231.125	A+PTR	smtp2128.gmoserver.jp
157.7.231.125	A	victorgroup-japan.com
157.7.231.125	A	cherished-events.com
157.7.231.126	PTR	smtp2129.gmoserver.jp
157.7.231.126	A	westiesonwheels.com
157.7.231.126	A	www.playthedrum.com
157.7.231.127	PTR	smtp21210.gmoserver.jp
157.7.231.127	A	xn--eck8d4dp11ltruw8u8f6b.com
157.7.231.127	A	yawata-jyagaimo.com
157.7.231.128	PTR	unused-157-7-231-128.interq.or.jp
157.7.231.128	A	p-yamashita.com
157.7.231.129	A	mail.ganbarimaster.jp
157.7.231.132	PTR	unused-157-7-231-132.interq.or.jp
157.7.231.132	A	cueing.jp
157.7.231.138	PTR	unused-157-7-231-138.interq.or.jp
157.7.231.138	A	goshu-seiyaku.co.jp
157.7.231.143	PTR	unused-157-7-231-143.interq.or.jp
157.7.231.143	A	oisi2.com
157.7.231.145	PTR	unused-157-7-231-145.interq.or.jp
157.7.231.145	A	stella-polare.co.jp
157.7.231.145	A	www.stella-polare.co.jp
157.7.231.148	A	oumeyoukai.com
157.7.231.150	PTR	unused-157-7-231-150.interq.or.jp
157.7.231.153	A	ov-k.jp
157.7.231.192	PTR	www14.gmoserver.jp
157.7.231.192	A	nextmove-office.com
157.7.231.192	A	www.anotherhistory.co.jp
157.7.231.195	A	pop.m2mpfs.net
157.7.231.195	A	list14.gmoserver.jp
157.7.231.195	A	pop.openline.jp
157.7.231.196	PTR	mx14.gmoserver.jp
157.7.231.196	A	mx.touyoushokusan.com
157.7.231.196	A	mx.kyukeijo.com
157.7.231.197	A+PTR	smtp14.gmoserver.jp
157.7.231.197	A	smtp.gardenpalace-spa.co.jp
157.7.231.197	A	smtp.magometc.co.jp
157.7.231.209	A+PTR	dns02.gmoserver.jp
157.7.231.209	A	ns-rs2.gmoserver.jp
157.7.231.213	A+PTR	dns02.newsv.jp
157.7.231.213	A	bekkoame.bekknet.ad.jp
157.7.231.224	PTR	www4.gmoserver.jp
157.7.231.224	A	shinraihoken.co.jp
157.7.231.224	A	tcbox.co.jp
157.7.231.226	A+PTR	ftp4.gmoserver.jp
157.7.231.226	A	ftp.merry-goround.com
157.7.231.227	A	imap.nanae.co.jp
157.7.231.227	A	imap.imadr.org
157.7.231.227	A	imap.y-pr.net
157.7.231.228	A+PTR	mx4.gmoserver.jp
157.7.231.229	A	smtp4.gmoserver.jp
157.7.231.240	PTR	www5.gmoserver.jp
157.7.231.240	A	t-and-a.net
157.7.231.240	A	hokenplan.co.jp
157.7.231.243	PTR	pop5.gmoserver.jp
157.7.231.243	A	imap.kensen.co.jp
157.7.231.243	A	imap.hirosedenko.co.jp
157.7.231.244	A+PTR	mx5.gmoserver.jp
157.7.231.244	A	mx.movia.jpn.com