Robtex

Up: 204.152.136.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 204.152.140.0/23
Down right: 204.152.142.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
204.152.140.0	PTR	ae36-0.icr01.dsm05.ntwk.msn.net
204.152.140.72	PTR	ae6-0.tyo01-96cbe-1a.ntwk.msn.net
204.152.140.87	PTR	xe-10-2-2-0.bl2-96c-1b.ntwk.msn.net
204.152.140.105	PTR	ae0-0.wst-96cbe-1a.ntwk.msn.net
204.152.140.184	PTR	xe-3-0-2-0.hk2-96cbe-1a.ntwk.msn.net
204.152.140.237	PTR	xe-7-0-1-0.ch3-96cbe-1a.ntwk.msn.net
204.152.141.13	PTR	xe-0-1-0-0.co2-96c-1a.ntwk.msn.net
204.152.141.32	PTR	ae51-0.bn1-96lsr-1.ntwk.msn.net
204.152.141.36	PTR	ae53-0.bn1-96lsr-1.ntwk.msn.net
204.152.141.39	PTR	ae1-0.bn1-96c-2b.ntwk.msn.net
204.152.141.75	PTR	ae11-0.db3-96c-2a.ntwk.msn.net
204.152.141.79	PTR	ae1-0.db3-96c-3a.ntwk.msn.net
204.152.141.80	PTR	ae56-0.db3-96lsr-1.ntwk.msn.net
204.152.141.83	PTR	ae11-0.db3-96c-1b.ntwk.msn.net
204.152.141.89	PTR	ae12-0.db3-96c-2a.ntwk.msn.net
204.152.141.93	PTR	ae2-0.db3-96c-3a.ntwk.msn.net
204.152.141.106	PTR	xe-7-1-1-0.sao03-96cbe-1a.ntwk.msn.net
204.152.141.111	PTR	ae38-0.sn1-96lsr-1.ntwk.msn.net
204.152.141.116	PTR	ae3-0.amb-96cbe-1a.ntwk.msn.net
204.152.141.117	PTR	ae3-0.lts-96cbe-1a.ntwk.msn.net
204.152.141.123	PTR	ae4-0.lts-96cbe-1a.ntwk.msn.net
204.152.141.141	PTR	ae8-0.lts-96cbe-1a.ntwk.msn.net
204.152.141.195	PTR	ae3-0.lon04-96cbe-1a.ntwk.msn.net
204.152.141.206	PTR	ae1-0.was02-96cbe-1a.ntwk.msn.net
204.152.142.1	PTR	204-152-142-1.zipcar.com
204.152.142.1	A	vpn.zipcar.com
204.152.142.1	A	us.vpn.zipcar.com
204.152.142.214	PTR	204-152-142-214.zipcar.com
204.152.142.214	A	www2-direct.zipcar.io
204.152.142.214	A	www2-direct.zipcar.com
204.152.143.1	PTR	whq-ns.wizcom.com
204.152.143.3	PTR	3.143.152.204.in-addr-arpa
204.152.143.4	A	mx1.hospitality.cendant.com
204.152.143.6	PTR	dmz-ftp2.wizcom.com
204.152.143.8	PTR	dmz-ftp2.wizcom.com
204.152.143.10	PTR	dmz-web2.wizcom.com
204.152.143.11	PTR	204.152.143.11
204.152.143.11	A	mx2.zipcar.com
204.152.143.12	PTR	204.152.143.12
204.152.143.13	PTR	204.152.143.13
204.152.143.14	PTR	204.152.143.14
204.152.143.15	PTR	204.152.143.15
204.152.143.19	PTR	204.152.143.19
204.152.143.21	PTR	204.152.143.21
204.152.143.22	PTR	204.152.143.22
204.152.143.29	PTR	204.152.143.29
204.152.143.38	PTR	aim.coldwellbanker.com
204.152.143.42	PTR	204.152.143.42
204.152.143.43	PTR	204.152.143.43
204.152.143.46	PTR	204.152.143.46
204.152.143.61	PTR	204.152.143.61
204.152.143.62	PTR	whq-hrs.wizcom.com
204.152.143.68	PTR	204.152.143.68
204.152.143.70	A+PTR	reservations.avis.com
204.152.143.73	PTR	204.152.143.73
204.152.143.75	A	eventreg.coldwellbanker.com
204.152.143.82	PTR	dmz-era-mail1.era.com
204.152.143.84	PTR	hotel.cendant.com
204.152.143.86	PTR	dmz-dev1.wizcom.com
204.152.143.97	PTR	wizard.avis.com
204.152.143.100	PTR	res1.avis.com
204.152.143.102	PTR	204.152.143.102
204.152.143.104	PTR	204.152.143.104
204.152.143.104	A	reservations.drivebudget.com
204.152.143.105	PTR	www.cgrn.com
204.152.143.106	PTR	204.152.143.106
204.152.143.109	PTR	204.152.143.109
204.152.143.112	PTR	204.152.143.112
204.152.143.117	PTR	204.152.143.117
204.152.143.118	PTR	204.152.143.118
204.152.143.121	PTR	entergy.cendantmobility.com
204.152.143.122	PTR	wellsfargo.cendantmobility.com
204.152.143.126	PTR	204.152.143.126
204.152.143.128	PTR	204.152.143.128
204.152.143.130	PTR	204.152.143.130
204.152.143.131	PTR	204.152.143.131
204.152.143.132	PTR	204.152.143.132
204.152.143.149	PTR	navyfcu.membermove.com
204.152.143.150	PTR	qrms.cendantmobility.com
204.152.143.151	PTR	www.cendantintercultural.com
204.152.143.152	PTR	ahp.cendantmobility.com
204.152.143.158	PTR	raytheon.cendantmobility.com
204.152.143.160	PTR	204.152.143.160
204.152.143.167	PTR	204.152.143.167
204.152.143.169	PTR	test.cgrn.com
204.152.143.171	A	testwww.teamera.com
204.152.143.174	PTR	204.152.143.174
204.152.143.177	PTR	204.152.143.177
204.152.143.188	PTR	204.152.143.188
204.152.143.191	PTR	204.152.143.191
204.152.143.198	PTR	ns2.3dns.cendantmortgage.com
204.152.143.205	PTR	204.152.143.205
204.152.143.206	PTR	204.152.143.206
204.152.143.211	PTR	204.152.143.211
204.152.143.215	PTR	204.152.143.215
204.152.143.219	PTR	204.152.143.219
204.152.143.222	PTR	wizard.avisweb.com
204.152.143.224	PTR	204.152.143.224
204.152.143.225	PTR	teamedg.teamera.com
204.152.143.226	PTR	amonzon.cendantmobility.com
204.152.143.227	PTR	204.152.143.227
204.152.143.233	PTR	204.152.143.233
204.152.143.240	PTR	204.152.143.240
204.152.143.241	PTR	204.152.143.241
204.152.143.245	PTR	204.152.143.245
204.152.143.250	PTR	wizard2.avisweb.com
204.152.143.254	PTR	204.152.143.254