Robtex

Up: 173.255.4.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 173.255.6.0/24
Down right: 173.255.7.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
173.255.6.18	PTR	bigdomer.com
173.255.6.19	PTR	bluedotdiamond.com
173.255.6.20	PTR	duocanespecials.com
173.255.6.21	PTR	fasenandax.com
173.255.6.22	PTR	fullermedium.com
173.255.6.26	A	del.ph
173.255.6.26	A	dlpx.co
173.255.6.42	A	www.respondsocial.com
173.255.6.42	A	waggybuttpuppy.com
173.255.6.42	A	respondsocial.com
173.255.6.58	A	cheapdedicatedserver.com
173.255.6.59	A	colocation.net
173.255.6.60	A	emailserver.net
173.255.6.61	A	streamingserver.net
173.255.6.62	A	virtualprivateserver.net
173.255.6.66	PTR	asda.m-theorygrp.com
173.255.6.66	A	jessica.engoyan.com
173.255.6.66	A	ns1.engoyan.com
173.255.6.70	A	voiprelay.com
173.255.6.70	A	mail.voiprelay.com
173.255.6.82	A	lnvbo.com
173.255.6.82	A	livenationvbo.com
173.255.6.90	A	mocambos.net
173.255.6.99	PTR	mx1.lastcauses.com
173.255.6.107	PTR	canoncalc.com
173.255.6.108	PTR	stustampeed.com
173.255.6.109	PTR	excelladaily.com
173.255.6.114	A+PTR	ibrahim.folhanet.com.br
173.255.7.3	PTR	mta1.microacademics.com
173.255.7.11	PTR	mx1.pixocera.com
173.255.7.19	PTR	mta1.hyperquakemonkey.com
173.255.7.20	PTR	mta2.hyperquakemonkey.com
173.255.7.50	A	punchcard.com
173.255.7.50	A	gigway.com
173.255.7.50	A	offerbox.me
173.255.7.68	A	rui-cloud.com
173.255.7.68	A	omniterm.us
173.255.7.68	A	clearcis.com
173.255.7.86	A+PTR	asroth.organizedanarchy.net
173.255.7.86	A	mail.organizedanarchy.net
173.255.7.86	A	organizedanarchy.net
173.255.7.93	PTR	mx.audit-one.com
173.255.7.132	A	blog2.mmm.me
173.255.7.139	A	ssb2sq.blog9.mmm.me
173.255.7.139	A	tokyohotmuryou.blog9.mmm.me
173.255.7.139	A	blog9.mmm.me
173.255.7.140	A	blog10.mmm.me
173.255.7.145	A	ni-023.blog15.mmm.me
173.255.7.149	A	kanojo.blog19.mmm.me
173.255.7.156	A	blog26.mmm.me
173.255.7.156	A	loliknight-asian.blog26.mmm.me
173.255.7.158	A	blog28.mmm.me
173.255.7.163	A	blog33.mmm.me
173.255.7.182	A	blog.mmm.me
173.255.7.194	PTR	idrivesync.com
173.255.7.194	A	evs.idrivesync.com
173.255.7.195	PTR	idrivesync.com
173.255.7.196	PTR	idrivesync.com
173.255.7.198	A+PTR	idrivesync.com
173.255.7.198	A	www.idrivesync.com
173.255.7.200	PTR	idrive.com
173.255.7.211	PTR	idrive.com
173.255.7.228	PTR	idrive.com
173.255.7.232	PTR	idrive.com
173.255.7.247	PTR	idrivesync.com
173.255.7.248	PTR	idrivesync.com
173.255.7.254	PTR	idrive.com