Robtex

Up: 198.23.244.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 198.23.245.0/25
Down right: 198.23.245.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
198.23.245.1	PTR	host.colocrossing.com
198.23.245.8	PTR	host.colocrossing.com
198.23.245.13	PTR	host.colocrossing.com
198.23.245.14	PTR
198.23.245.15	PTR	host.colocrossing.com
198.23.245.17	PTR
198.23.245.18	PTR	host.colocrossing.com
198.23.245.19	PTR
198.23.245.20	PTR	host.colocrossing.com
198.23.245.22	A	visualcove.com
198.23.245.23	PTR
198.23.245.24	PTR	host.colocrossing.com
198.23.245.26	PTR
198.23.245.27	PTR	host.colocrossing.com
198.23.245.29	PTR
198.23.245.31	PTR	host.colocrossing.com
198.23.245.32	PTR
198.23.245.36	PTR
198.23.245.38	PTR
198.23.245.40	PTR	host.colocrossing.com
198.23.245.43	PTR
198.23.245.43	A	webapplication.vecmail.com
198.23.245.45	PTR
198.23.245.46	PTR	host.colocrossing.com
198.23.245.48	PTR	198-23-245-48-host.colocrossing.com
198.23.245.50	PTR	web.hzgaming.net
198.23.245.50	A	www.rainmeter.net
198.23.245.50	A	osirisdevelopment.com
198.23.245.53	PTR	host.colocrossing.com
198.23.245.54	PTR
198.23.245.54	A	bitnn.com
198.23.245.55	PTR	host.colocrossing.com
198.23.245.56	PTR	host.colocrossing.com
198.23.245.61	PTR	host.colocrossing.com
198.23.245.62	PTR	host.colocrossing.com
198.23.245.63	PTR	host.colocrossing.com
198.23.245.63	A	ns2.colgateminuette.org
198.23.245.67	PTR	host.colocrossing.com
198.23.245.69	PTR
198.23.245.71	PTR	host.colocrossing.com
198.23.245.74	PTR	host.colocrossing.com
198.23.245.78	A	apparentvisuals.com
198.23.245.79	PTR	host.colocrossing.com
198.23.245.87	PTR	host.colocrossing.com
198.23.245.88	PTR	host.colocrossing.com
198.23.245.90	PTR	telcommediainfo.info
198.23.245.92	PTR	host.colocrossing.com
198.23.245.97	PTR
198.23.245.100	A	ns1.elementcomputer.co
198.23.245.103	PTR	uklot.vecmail.com
198.23.245.107	PTR	host.colocrossing.com
198.23.245.109	PTR	host.colocrossing.com
198.23.245.110	PTR	host.colocrossing.com
198.23.245.110	A	donskogstad.com
198.23.245.110	A	the-howletts.com
198.23.245.111	PTR	host.colocrossing.com
198.23.245.112	PTR	ermis-us.webplexy.com
198.23.245.117	PTR	host.colocrossing.com
198.23.245.120	A	www.seeketh.org
198.23.245.120	A	seeketh.org
198.23.245.124	PTR	mercafrutas.com
198.23.245.125	PTR	host.colocrossing.com
198.23.245.126	A+PTR	alliancegroup.vecsmtp.com
198.23.245.129	PTR	abaif.com
198.23.245.130	PTR	host.colocrossing.com
198.23.245.132	A+PTR	ecaresoftech.in
198.23.245.138	PTR	host.colocrossing.com
198.23.245.139	PTR
198.23.245.140	PTR
198.23.245.143	PTR	host.colocrossing.com
198.23.245.147	PTR	seo-local-rankings.com
198.23.245.148	PTR
198.23.245.152	PTR	198-23-245-152-host.colocrossing.com
198.23.245.153	PTR	host.colocrossing.com
198.23.245.155	PTR
198.23.245.165	PTR
198.23.245.170	PTR
198.23.245.172	PTR
198.23.245.173	PTR
198.23.245.175	PTR	host.colocrossing.com
198.23.245.180	PTR	198-23-245-180-host.colocrossing.com
198.23.245.182	PTR	ur4.gohosted.ca
198.23.245.183	PTR	host.colocrossing.com
198.23.245.188	PTR
198.23.245.189	PTR	host.colocrossing.com
198.23.245.193	PTR
198.23.245.193	A	ificate.net
198.23.245.200	PTR
198.23.245.201	PTR	host.colocrossing.com
198.23.245.201	A	mail.testformula.com
198.23.245.203	PTR	host.colocrossing.com
198.23.245.203	A	mail.testformula.in
198.23.245.205	PTR	host.colocrossing.com
198.23.245.207	PTR	master.vps.imagine.la
198.23.245.209	PTR
198.23.245.210	PTR
198.23.245.211	PTR
198.23.245.215	PTR
198.23.245.217	PTR	host.colocrossing.com
198.23.245.219	PTR	198-23-245-219-host.colocrossing.com
198.23.245.220	PTR	serv4.netmarketingtel.com
198.23.245.221	PTR	host.colocrossing.com
198.23.245.227	PTR	host.colocrossing.com
198.23.245.228	A+PTR	bulkmarketingsystem.vecmail.com
198.23.245.230	PTR	host.colocrossing.com
198.23.245.236	PTR
198.23.245.237	PTR
198.23.245.239	PTR
198.23.245.241	PTR
198.23.245.243	PTR
198.23.245.244	PTR	host.colocrossing.com
198.23.245.245	PTR	host.colocrossing.com
198.23.245.246	PTR	host.colocrossing.com
198.23.245.250	PTR
198.23.245.252	PTR	host.colocrossing.com
198.23.245.255	PTR	host.colocrossing.com