Robtex

Up: 66.128.0.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 66.128.0.0/22
Down right: 66.128.4.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
66.128.0.0	PTR	66.128.0.0.xchangetele.com
66.128.0.2	PTR	66.128.0.2.xchangetele.com
66.128.0.43	PTR	66.128.0.43.xchangetele.com
66.128.0.202	A	mail.challenge-ei.com
66.128.0.203	PTR	66.128.0.203.xchangetele.com
66.128.0.203	A	challenge-ei.net
66.128.0.203	A	www.challenge-ei.net
66.128.1.1	PTR	mail.revivalhhc.org
66.128.1.4	PTR	66.128.1.4.xchangetele.com
66.128.1.18	PTR	66.128.1.18.xchangetele.com
66.128.1.18	A	mail1.cobblehill.org
66.128.1.25	PTR	66.128.1.25.xchangetele.com
66.128.1.41	PTR	66.128.1.41.xchangetele.com
66.128.1.43	PTR	66.128.1.43.xchangetele.com
66.128.1.51	PTR	66.128.1.51.xchangetele.com
66.128.1.74	PTR	66.128.1.74.xchangetele.com
66.128.1.91	PTR	esafe.dor-yeshorim.com
66.128.1.91	A	mail.lchaimcord.com
66.128.1.91	A	*.lchaimcord.com
66.128.1.122	PTR	66.128.1.122.xchangetele.com
66.128.1.122	A	kjjournal.com
66.128.1.141	A	ezcarnyc.com
66.128.1.141	A	mail.ezcarnyc.com
66.128.1.153	A	*.concordlimo.com
66.128.1.178	PTR	66.128.1.178.xchangetele.com
66.128.1.178	A	mail.goflowip.com
66.128.1.178	A	goflowip.com
66.128.1.211	PTR	66.128.1.211.xchangetele.com
66.128.1.211	A	barracuda3.virginiadare.com
66.128.2.18	PTR	66.128.2.18.xchangetele.com
66.128.2.18	A	centraloffice.net
66.128.2.18	A	www.bigtalkny.com
66.128.2.19	PTR	66.128.2.19.xchangetele.com
66.128.2.25	A	cfgs.xchangetele.com
66.128.2.36	A	mx5.xchangetele.com
66.128.2.36	A	mail5.xchangetele.com
66.128.2.38	A	cfg.xchangetele.com
66.128.2.42	PTR	66.128.2.42.xchangetele.com
66.128.2.66	A+PTR	pbx2.xchangetele.com
66.128.2.139	PTR	66.128.2.139.xchangetele.com
66.128.2.139	A	mail4.xchangetele.com
66.128.2.139	A	mx.justemailing.com
66.128.2.140	A	x3.xchangetele.com
66.128.2.152	A+PTR	ns6.xchangetele.com
66.128.2.152	A	ns3.xchangetele.com
66.128.2.152	A	ns4.xchangetele.com
66.128.2.154	PTR	66.128.2.154.xchangetele.com
66.128.3.10	PTR	66.128.3.10.xchangetele.com
66.128.3.35	A	mail.bpbrokerage.com
66.128.3.65	A	dsl.quicktransferinc.com
66.128.3.127	A	brooklynbatteryworks.com
66.128.3.145	PTR	66.128.3.145.xchangetele.com
66.128.3.145	A	mail.gocomdata.com
66.128.3.191	A	dsl.qualitytradeway.com
66.128.3.219	PTR	66.128.3.219.xchangetele.com
66.128.3.219	A	smtp.ezrasyisroel.org
66.128.3.246	A	ttblk01.tandemtransit.com
66.128.4.26	PTR	66.128.4.26.xchangetele.com
66.128.4.26	A	mail.studioeis.com
66.128.4.91	PTR	66.128.4.91.xchangetele.com
66.128.4.130	A	mail.applemail.com
66.128.4.135	A	mail.astepsdiv.com
66.128.4.221	A	www.devington.com
66.128.4.221	A	devington.com
66.128.4.221	A	*.devington.com
66.128.5.170	PTR	66.128.5.170.xchangetele.com
66.128.5.170	A	mail.yeshte.com
66.128.5.170	A	yeshte.com
66.128.5.179	A	mailx.bushterminal.com
66.128.7.2	PTR	66.128.7.2.xchangetele.com
66.128.7.107	A	email.ezrasyisroel.org