Robtex

Up: 216.231.0.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 216.231.0.0/22
Down right: 216.231.4.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
216.231.0.17	PTR	ems-rs-rsm6
216.231.0.18	PTR	rs-rsm6-ems
216.231.0.19	A+PTR	wsip-216-231-0-19.oc.oc.cox.net
216.231.0.64	PTR	wsip-216-231-0-64.oc.oc.cox.net
216.231.0.105	PTR	convergence-rs-av3
216.231.0.169	PTR	trendmicro-rs-mv2
216.231.0.208	A+PTR	wsip-216-231-0-208.oc.oc.cox.net
216.231.1.35	PTR	wsip-216-231-1-35.oc.oc.cox.net
216.231.1.81	PTR	conexant-rs-ir1
216.231.1.105	PTR	iusd-rs-ir1
216.231.1.133	A	mail.healingword.tv
216.231.1.160	PTR	wsip-216-231-1-160.oc.oc.cox.net
216.231.1.185	A+PTR	wsip-216-231-1-185.oc.oc.cox.net
216.231.1.188	A	viewmymortgage.com
216.231.1.188	A	greenpathfund.com
216.231.1.191	A	wsip-216-231-1-191.oc.oc.cox.net
216.231.1.214	A	wsip-216-231-1-214.oc.oc.cox.net
216.231.1.224	PTR	wsip-216-231-1-224.oc.oc.cox.net
216.231.1.240	PTR	wsip-216-231-1-240.oc.oc.cox.net
216.231.2.26	A	mail.chromausa.com
216.231.2.34	A	mail.pda-eng.com
216.231.2.116	A	horizoninvestmentgroups.com
216.231.2.125	A	qsmail.questinc.com
216.231.2.126	A	ns1.questinc.com
216.231.2.168	A	wsip-216-231-2-168.oc.oc.cox.net
216.231.2.174	A	wsip-216-231-2-174.oc.oc.cox.net
216.231.3.2	A+PTR	wsip-216-231-3-2.oc.oc.cox.net
216.231.3.6	A	mail.psbincorporated.com
216.231.3.6	A	psbincorporated.com
216.231.3.6	A	*.psbincorporated.com
216.231.3.12	A	*.psbimagemarketing.com
216.231.3.12	A	psbimagemarketing.com
216.231.3.25	PTR	mail.psbonline.com
216.231.3.25	A	mail.psblitho.com
216.231.3.25	A	mail.thecollateralgroup.com
216.231.3.40	A	psbdigital.com
216.231.3.152	PTR	wsip-216-231-3-152.oc.oc.cox.net
216.231.3.152	A	rhwb.net
216.231.3.161	PTR	melissadata.com
216.231.3.162	PTR	melissadata.com
216.231.3.162	A	zipsearch.melissadata.net
216.231.3.162	A	mailerssoftware.com
216.231.3.163	PTR	melissadata.com
216.231.3.163	A	melissadata.eu
216.231.3.163	A	personator.melissadata.net
216.231.3.168	PTR	melissadata.com
216.231.3.169	PTR	melissadata.com
216.231.3.169	A	personator.melissadata.net
216.231.3.170	PTR	melissadata.com
216.231.3.170	A	address.melissadata.net
216.231.3.176	PTR	melissadata.com
216.231.3.176	A	geocoder.melissadata.net
216.231.3.176	A	addresscheck.melissadata.net
216.231.3.177	PTR	melissadata.com
216.231.3.177	A	webvisitor.melissadata.net
216.231.3.178	PTR	melissadata.com
216.231.3.179	PTR	melissadata.com
216.231.3.184	PTR	melissadata.com
216.231.3.186	A	token.melissadata.net
216.231.3.187	PTR	melissadata.com
216.231.3.203	A	mail.innovagecanada.org
216.231.3.226	A+PTR	wsip-216-231-3-226.oc.oc.cox.net
216.231.4.2	PTR	wsip-216-231-4-2.oc.oc.cox.net
216.231.4.144	A+PTR	wsip-216-231-4-144.oc.oc.cox.net
216.231.4.169	A+PTR	wsip-216-231-4-169.oc.oc.cox.net
216.231.4.170	A+PTR	wsip-216-231-4-170.oc.oc.cox.net
216.231.5.60	A	wsip-216-231-5-60.oc.oc.cox.net
216.231.5.72	A+PTR	wsip-216-231-5-72.oc.oc.cox.net
216.231.5.93	A	wsip-216-231-5-93.oc.oc.cox.net
216.231.5.224	A+PTR	wsip-216-231-5-224.oc.oc.cox.net
216.231.6.1	A+PTR	wsip-216-231-6-1.oc.oc.cox.net
216.231.6.2	A+PTR	wsip-216-231-6-2.oc.oc.cox.net
216.231.6.3	A+PTR	wsip-216-231-6-3.oc.oc.cox.net
216.231.6.6	A	wsip-216-231-6-6.oc.oc.cox.net
216.231.6.8	A+PTR	wsip-216-231-6-8.oc.oc.cox.net
216.231.6.15	A	wsip-216-231-6-15.oc.oc.cox.net
216.231.6.19	A+PTR	wsip-216-231-6-19.oc.oc.cox.net
216.231.6.22	A	wsip-216-231-6-22.oc.oc.cox.net
216.231.6.24	A+PTR	wsip-216-231-6-24.oc.oc.cox.net
216.231.6.27	A+PTR	wsip-216-231-6-27.oc.oc.cox.net
216.231.6.28	A	wsip-216-231-6-28.oc.oc.cox.net
216.231.6.35	A+PTR	wsip-216-231-6-35.oc.oc.cox.net
216.231.6.46	A	wsip-216-231-6-46.oc.oc.cox.net
216.231.6.53	A	wsip-216-231-6-53.oc.oc.cox.net
216.231.6.62	A	wsip-216-231-6-62.oc.oc.cox.net
216.231.6.65	A+PTR	wsip-216-231-6-65.oc.oc.cox.net
216.231.6.67	A+PTR	wsip-216-231-6-67.oc.oc.cox.net
216.231.6.68	A	wsip-216-231-6-68.oc.oc.cox.net
216.231.6.71	A	wsip-216-231-6-71.oc.oc.cox.net
216.231.6.77	A	wsip-216-231-6-77.oc.oc.cox.net
216.231.6.81	A+PTR	wsip-216-231-6-81.oc.oc.cox.net
216.231.6.91	A+PTR	wsip-216-231-6-91.oc.oc.cox.net
216.231.6.92	A	wsip-216-231-6-92.oc.oc.cox.net
216.231.6.100	A	wsip-216-231-6-100.oc.oc.cox.net
216.231.6.107	A+PTR	wsip-216-231-6-107.oc.oc.cox.net
216.231.6.108	A	wsip-216-231-6-108.oc.oc.cox.net
216.231.6.112	A+PTR	wsip-216-231-6-112.oc.oc.cox.net
216.231.6.116	A	wsip-216-231-6-116.oc.oc.cox.net
216.231.6.119	A	wsip-216-231-6-119.oc.oc.cox.net
216.231.6.127	A	wsip-216-231-6-127.oc.oc.cox.net
216.231.6.134	A	wsip-216-231-6-134.oc.oc.cox.net
216.231.6.142	A	wsip-216-231-6-142.oc.oc.cox.net
216.231.6.149	A	wsip-216-231-6-149.oc.oc.cox.net
216.231.6.150	A	wsip-216-231-6-150.oc.oc.cox.net
216.231.6.155	A+PTR	wsip-216-231-6-155.oc.oc.cox.net
216.231.6.159	A	wsip-216-231-6-159.oc.oc.cox.net
216.231.6.162	A+PTR	wsip-216-231-6-162.oc.oc.cox.net
216.231.6.164	A	wsip-216-231-6-164.oc.oc.cox.net
216.231.6.171	A+PTR	wsip-216-231-6-171.oc.oc.cox.net
216.231.6.175	A	wsip-216-231-6-175.oc.oc.cox.net
216.231.6.184	A+PTR	wsip-216-231-6-184.oc.oc.cox.net
216.231.6.191	A	wsip-216-231-6-191.oc.oc.cox.net
216.231.6.193	A+PTR	wsip-216-231-6-193.oc.oc.cox.net
216.231.6.198	A	wsip-216-231-6-198.oc.oc.cox.net
216.231.6.199	A	wsip-216-231-6-199.oc.oc.cox.net
216.231.6.201	A+PTR	wsip-216-231-6-201.oc.oc.cox.net
216.231.6.202	A+PTR	wsip-216-231-6-202.oc.oc.cox.net
216.231.6.208	A+PTR	wsip-216-231-6-208.oc.oc.cox.net
216.231.6.216	A+PTR	wsip-216-231-6-216.oc.oc.cox.net
216.231.6.222	A	wsip-216-231-6-222.oc.oc.cox.net
216.231.6.225	A+PTR	wsip-216-231-6-225.oc.oc.cox.net
216.231.6.227	A+PTR	wsip-216-231-6-227.oc.oc.cox.net
216.231.6.229	A	wsip-216-231-6-229.oc.oc.cox.net
216.231.6.234	A+PTR	wsip-216-231-6-234.oc.oc.cox.net
216.231.6.239	A	wsip-216-231-6-239.oc.oc.cox.net
216.231.6.249	A+PTR	wsip-216-231-6-249.oc.oc.cox.net
216.231.6.252	A	wsip-216-231-6-252.oc.oc.cox.net
216.231.6.254	A	wsip-216-231-6-254.oc.oc.cox.net
216.231.7.71	A	wsip-216-231-7-71.oc.oc.cox.net
216.231.7.230	A	wsip-216-231-7-230.oc.oc.cox.net