Robtex

Up: 173.89.0.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 173.89.0.0/20
Down right: 173.89.16.0/20
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
173.89.0.75	A+PTR	cpe-173-89-0-75.wi.res.rr.com
173.89.0.76	A+PTR	cpe-173-89-0-76.wi.res.rr.com
173.89.0.154	A+PTR	cpe-173-89-0-154.wi.res.rr.com
173.89.0.194	A+PTR	cpe-173-89-0-194.wi.res.rr.com
173.89.0.195	A+PTR	cpe-173-89-0-195.wi.res.rr.com
173.89.0.206	A+PTR	cpe-173-89-0-206.wi.res.rr.com
173.89.0.245	A+PTR	cpe-173-89-0-245.wi.res.rr.com
173.89.0.251	A	bashasoliman.com
173.89.0.251	A	mail.bashasoliman.com
173.89.1.3	A	173.89.153-static.reverse.softlayer.com
173.89.1.4	A	173.89.154-static.reverse.softlayer.com
173.89.1.89	A+PTR	cpe-173-89-1-89.wi.res.rr.com
173.89.1.192	A	mail1.christthelife.com
173.89.1.192	A	mail1.mepsoft.net
173.89.2.2	A+PTR	cpe-173-89-2-2.wi.res.rr.com
173.89.2.2	A	warrenheld.net
173.89.2.2	A	warrenheld.info
173.89.2.6	PTR	cpe-173-89-2-6.wi.res.rr.com
173.89.2.6	A	thebobafett.com
173.89.2.223	A+PTR	cpe-173-89-2-223.wi.res.rr.com
173.89.3.65	A	cpe-173-89-3-65.wi.res.rr.com
173.89.3.139	A+PTR	cpe-173-89-3-139.wi.res.rr.com
173.89.3.139	A	shaftware.net
173.89.4.90	A+PTR	cpe-173-89-4-90.wi.res.rr.com
173.89.4.90	A	javi-dev.com
173.89.4.195	A+PTR	cpe-173-89-4-195.wi.res.rr.com
173.89.5.2	A+PTR	cpe-173-89-5-2.wi.res.rr.com
173.89.5.149	PTR	cpe-173-89-5-149.wi.res.rr.com
173.89.6.2	A+PTR	cpe-173-89-6-2.wi.res.rr.com
173.89.6.205	A	muss.us
173.89.7.12	A	kondzio.net
173.89.7.40	A+PTR	cpe-173-89-7-40.wi.res.rr.com
173.89.7.40	A	mail.securepacket.net
173.89.7.40	A	securepacket.net
173.89.7.150	PTR	cpe-173-89-7-150.wi.res.rr.com
173.89.7.200	A	frameparkauto.com
173.89.7.249	PTR	cpe-173-89-7-249.wi.res.rr.com
173.89.8.78	PTR	cpe-173-89-8-78.wi.res.rr.com
173.89.8.78	A	midwestdockandlift.net
173.89.8.78	A	familyathome.net
173.89.8.234	PTR	cpe-173-89-8-234.wi.res.rr.com
173.89.9.59	A	mail.warrenheld.info
173.89.9.76	A	cpe-173-89-9-76.wi.res.rr.com
173.89.9.87	A	cpe-173-89-9-87.wi.res.rr.com
173.89.9.95	A	cpe-173-89-9-95.wi.res.rr.com
173.89.9.195	A+PTR	cpe-173-89-9-195.wi.res.rr.com
173.89.10.4	A+PTR	cpe-173-89-10-4.wi.res.rr.com
173.89.10.89	A+PTR	cpe-173-89-10-89.wi.res.rr.com
173.89.10.89	A	mail.tomsisson.com
173.89.11.2	A+PTR	cpe-173-89-11-2.wi.res.rr.com
173.89.11.34	PTR	cpe-173-89-11-34.wi.res.rr.com
173.89.11.34	A	lukiepoo.com
173.89.11.34	A	daisyondesign.com
173.89.11.40	A+PTR	cpe-173-89-11-40.wi.res.rr.com
173.89.11.45	PTR	cpe-173-89-11-45.wi.res.rr.com
173.89.11.187	A	cpe-173-89-11-187.wi.res.rr.com
173.89.12.2	A	cpe-173-89-12-2.wi.res.rr.com
173.89.12.30	A	cpe-173-89-12-30.wi.res.rr.com
173.89.12.144	A	cpe-173-89-12-144.wi.res.rr.com
173.89.13.152	A	cpe-173-89-13-152.wi.res.rr.com
173.89.13.167	A	cpe-173-89-13-167.wi.res.rr.com
173.89.13.240	A	cpe-173-89-13-240.wi.res.rr.com
173.89.14.51	A+PTR	cpe-173-89-14-51.wi.res.rr.com
173.89.14.51	A	anykeyhome.com
173.89.14.128	A+PTR	cpe-173-89-14-128.wi.res.rr.com
173.89.14.128	A	bringa.net
173.89.14.169	A	fantomstryker.com
173.89.14.170	A+PTR	cpe-173-89-14-170.wi.res.rr.com
173.89.14.200	A+PTR	cpe-173-89-14-200.wi.res.rr.com
173.89.15.36	A+PTR	cpe-173-89-15-36.wi.res.rr.com
173.89.15.120	A+PTR	cpe-173-89-15-120.wi.res.rr.com
173.89.15.133	A+PTR	cpe-173-89-15-133.wi.res.rr.com
173.89.15.133	A	tschneider.dyndns.org
173.89.15.147	A+PTR	cpe-173-89-15-147.wi.res.rr.com
173.89.15.147	A	chadhohner.us
173.89.15.164	A+PTR	cpe-173-89-15-164.wi.res.rr.com
173.89.16.40	A+PTR	cpe-173-89-16-40.wi.res.rr.com
173.89.16.110	A+PTR	cpe-173-89-16-110.wi.res.rr.com
173.89.16.221	A+PTR	cpe-173-89-16-221.wi.res.rr.com
173.89.17.165	A+PTR	cpe-173-89-17-165.wi.res.rr.com
173.89.18.224	A+PTR	cpe-173-89-18-224.wi.res.rr.com
173.89.19.87	A+PTR	cpe-173-89-19-87.wi.res.rr.com
173.89.19.87	A	clobberstomp.com
173.89.19.120	A+PTR	cpe-173-89-19-120.wi.res.rr.com
173.89.19.120	A	utendiracingleague.com
173.89.20.25	PTR	cpe-173-89-20-25.wi.res.rr.com
173.89.20.25	A	tamatechllc.com
173.89.20.111	A	cpe-173-89-20-111.wi.res.rr.com
173.89.20.202	A	imap.chiliwings.net
173.89.20.202	A	pop3.chiliwings.net
173.89.20.202	A	chiliwings.net
173.89.22.30	A+PTR	cpe-173-89-22-30.wi.res.rr.com
173.89.22.30	A	mx.bub-rozek.com
173.89.22.30	A	bub-rozek.com
173.89.22.47	A+PTR	cpe-173-89-22-47.wi.res.rr.com
173.89.24.33	A	winntforums.com
173.89.25.14	PTR	cpe-173-89-25-14.wi.res.rr.com
173.89.25.14	A	lukiepoo.com
173.89.25.14	A	www.thelittlemexicancookingschool.com
173.89.25.149	A	cpe-173-89-25-149.wi.res.rr.com
173.89.26.42	A	mail.bringa.net
173.89.26.180	PTR	cpe-173-89-26-180.wi.res.rr.com
173.89.26.214	A	cpe-173-89-26-214.wi.res.rr.com
173.89.27.15	A	cpe-173-89-27-15.wi.res.rr.com
173.89.27.16	A	cpe-173-89-27-16.wi.res.rr.com
173.89.27.17	A	*.k.mbfiles.net
173.89.27.17	A	*.lax.mbfiles.net
173.89.28.2	A+PTR	cpe-173-89-28-2.wi.res.rr.com
173.89.28.90	A+PTR	cpe-173-89-28-90.wi.res.rr.com
173.89.28.90	A	lafdhbg.tfhmgmegxwop.hath.network
173.89.28.90	A	xskknoj.tfhmgmegxwop.hath.network
173.89.28.129	A+PTR	cpe-173-89-28-129.wi.res.rr.com
173.89.28.255	A+PTR	cpe-173-89-28-255.wi.res.rr.com
173.89.29.40	A	hampstr88.com
173.89.29.72	A+PTR	cpe-173-89-29-72.wi.res.rr.com
173.89.29.72	A	vlm.no-ip.com
173.89.29.173	A	brentredeker.net
173.89.30.0	A+PTR	cpe-173-89-30-0.wi.res.rr.com
173.89.30.0	A	wolf-technology.com
173.89.30.85	A	cpe-173-89-30-85.wi.res.rr.com
173.89.31.48	A+PTR	cpe-173-89-31-48.wi.res.rr.com