Robtex

Up: 64.4.32.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 64.4.32.0/21
Down right: 64.4.40.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
64.4.32.3	PTR	po50-185.bay-6nx-hot-1b.ntwk.msn.net
64.4.32.7	A	thewestcoastconnect.com
64.4.32.7	A	hotair.cn
64.4.32.89	A	bay0-lc1-067.bay0.hotmail.com
64.4.32.124	A	bay0-lc1-102.bay0.hotmail.com
64.4.32.128	A	bay0-lc1-106.bay0.hotmail.com
64.4.32.130	A	bay0-lc1-108.bay0.hotmail.com
64.4.32.145	A	bay0-lc1-123.bay0.hotmail.com
64.4.32.157	A	bay0-lc1-135.bay0.hotmail.com
64.4.32.158	A	bay0-lc1-136.bay0.hotmail.com
64.4.32.167	A	bay0-lc1-145.bay0.hotmail.com
64.4.32.172	A	bay0-lc1-150.bay0.hotmail.com
64.4.32.179	A	bay0-lc1-157.bay0.hotmail.com
64.4.32.188	A	bay0-lc1-166.bay0.hotmail.com
64.4.32.189	A	bay0-lc1-167.bay0.hotmail.com
64.4.33.7	A	thewestcoastconnect.com
64.4.33.7	A	hotair.cn
64.4.33.7	A	huihot.com
64.4.33.179	A+PTR	bay0-lc2-157.bay0.hotmail.com
64.4.34.192	PTR	by2msg3020407.phx.gbl
64.4.35.253	A	echo.edge.es.messenger.msn.com.nsatc.net
64.4.35.253	A	e450.voice.msnmessenger.msn.com.akadns.net
64.4.37.93	A	adulterous63.spaces.live.com
64.4.37.93	A	jobyjohnkj.spaces.live.com
64.4.37.93	A	www.planehunter.spaces.live.com
64.4.37.221	A	cid-1201ff6f29dacbe4.users.api.live.net
64.4.37.223	A	adulterous63.spaces.live.com
64.4.37.223	A	www.planehunter.spaces.live.com
64.4.37.223	A	soksa.spaces.live.com
64.4.38.249	A	mail.gztcm.net
64.4.40.22	A	hmopslab.com
64.4.40.25	A	hmopslab.com
64.4.40.26	A	hmopslab.com
64.4.40.48	A	lab-gdb1.msgr.hmopslab.com
64.4.40.61	A+PTR	ops-lab-db01.hotmail.com
64.4.40.69	A	lab-dc2.msgr.hmopslab.com
64.4.40.69	A	msgr.hmopslab.com
64.4.40.70	A	msgr.hmopslab.com
64.4.40.70	A	lab-dc1.msgr.hmopslab.com
64.4.40.244	A	hmopslab.com
64.4.43.7	A	leoniegibbons.com
64.4.43.7	A	hotmail.pn
64.4.43.7	A	hotmail.com.uz
64.4.44.25	A	baymsg1020401.gateway.edge.messenger.live.com
64.4.44.26	A+PTR	baymsg1020402.msg.skype.com
64.4.44.26	A	baymsg1020402.gateway.edge.messenger.live.com
64.4.44.27	PTR	baymsg1020403.msg.skype.com
64.4.44.28	A	baymsg1020404.msg.skype.com
64.4.44.32	A	baymsg1020408.gateway.edge.messenger.live.com
64.4.44.34	A	baymsg1020410.msg.skype.com
64.4.44.34	A	baymsg1020410.gateway.edge.messenger.live.com
64.4.44.37	A	baymsg1020413.gateway.edge.messenger.live.com
64.4.44.48	A	baymsg1020424.gateway.edge.messenger.live.com
64.4.44.49	A+PTR	baymsg1020425.gateway.edge.messenger.live.com
64.4.44.50	A	baymsg1020426.gateway.edge.messenger.live.com
64.4.44.51	PTR	baymsg1020427.msg.skype.com
64.4.44.51	A	baymsg1020427.gateway.edge.messenger.live.com
64.4.44.68	A	baymsg1030102.gateway.edge.messenger.live.com
64.4.44.72	A	baymsg1030106.gateway.edge.messenger.live.com
64.4.44.76	A	baymsg1030110.gateway.edge.messenger.live.com
64.4.44.77	A	baymsg1030111.gateway.edge.messenger.live.com
64.4.44.80	A+PTR	baymsg1030114.gateway.edge.messenger.live.com
64.4.44.81	A	baymsg1030115.gateway.edge.messenger.live.com
64.4.44.82	A	baymsg1030116.gateway.edge.messenger.live.com
64.4.44.83	PTR	baymsg1030117.gateway.edge.messenger.live.com
64.4.44.83	A	baymsg1030117.msg.skype.com
64.4.44.104	A	baymsg1030138.gateway.edge.messenger.live.com
64.4.45.2	PTR	po32-813.bay-6nx-msgr-1a.ntwk.msn.net
64.4.45.5	PTR	p_msgr_f_r_64~2.bay-f6f-msgr-1a.ntwk.msn.net
64.4.45.21	A	relay.data.edge.messenger.live.com
64.4.45.21	A	bay.relay.data.msnmessenger.msn.com.akadns.net
64.4.45.23	A	relay.sync.geo.msnmessenger.msn.com.akadns.net
64.4.45.23	A	bay.relay.sync.msnmessenger.msn.com.akadns.net
64.4.45.34	A	rtlc.msnmessenger.msn.com.akadns.net
64.4.45.57	A	messenger.services.live.com
64.4.45.57	A	by2.mwp.pw.messenger.msn.com.nsatc.net
64.4.45.57	A	messenger.mwp.geo.msnmessenger.msn.com.akadns.net
64.4.45.58	A	bay-1ab.skype.messenger.live.com
64.4.45.62	A	bay.gateway.messenger.hotmail.msnmessenger.msn.com.akadns.net
64.4.45.62	A	dp.msnmessenger.akadns.net
64.4.45.62	A	messenger.hotmail.msnmessenger.msn.com.akadns.net
64.4.45.208	A	fg-vip-64.4.45.208.bridge.messenger.live.com
64.4.45.209	A	bay.gateway.messenger.hotmail.msnmessenger.msn.com.akadns.net
64.4.45.209	A	dp.msnmessenger.akadns.net
64.4.45.209	A	messenger.hotmail.msnmessenger.msn.com.akadns.net
64.4.45.211	A	messenger.services.live.com
64.4.45.211	A	by2.mwp.pw.messenger.msn.com.nsatc.net
64.4.45.211	A	messenger.mwp.geo.msnmessenger.msn.com.akadns.net
64.4.45.212	A	rtlc.msnmessenger.msn.com.akadns.net
64.4.45.217	A	relay.data.edge.messenger.live.com
64.4.46.15	PTR	baymsgr2011001.phx.gbl
64.4.46.15	A	baymsgr2011001.gateway.messenger.live.com
64.4.46.16	PTR	baymsgr2011002.phx.gbl
64.4.46.16	A	baymsgr2011002.gateway.messenger.live.com
64.4.46.19	PTR	baymsgr2011005.phx.gbl
64.4.46.20	A	baymsgr2011006.gateway.messenger.live.com
64.4.46.23	A	baymsgr2011009.gateway.messenger.live.com
64.4.46.33	PTR	baymsgr2011103.phx.gbl
64.4.46.48	PTR	baymsgr2011202.phx.gbl
64.4.46.51	A	baymsgr2011205.gateway.messenger.live.com
64.4.46.79	A	baymsgr2011401.gateway.messenger.live.com
64.4.46.81	PTR	baymsgr2011403.phx.gbl
64.4.46.82	PTR	baymsgr2011404.phx.gbl
64.4.46.85	A	baymsgr2011407.gateway.messenger.live.com
64.4.46.95	A	baymsgr2011701.gateway.messenger.live.com
64.4.46.100	A	baymsgr2011706.gateway.messenger.live.com
64.4.46.112	PTR	baymsgr2011802.phx.gbl
64.4.46.113	PTR	baymsgr2011803.phx.gbl
64.4.46.114	PTR	baymsgr2011804.phx.gbl
64.4.46.115	A	baymsgr2011805.gateway.messenger.live.com
64.4.46.128	PTR	baymsgr2011902.phx.gbl
64.4.46.130	PTR	baymsgr2011904.phx.gbl
64.4.46.131	PTR	baymsgr2011905.phx.gbl
64.4.46.143	A	baymsgr2012016.gateway.messenger.live.com
64.4.46.145	A+PTR	baymsgr2012018.gateway.edge.messenger.live.com
64.4.46.148	A	baymsgr2012021.gateway.edge.messenger.live.com
64.4.46.154	A	baymsgr2012117.gateway.edge.messenger.live.com
64.4.46.156	A	baymsgr2012119.gateway.edge.messenger.live.com
64.4.46.166	PTR	baymsgr2012219.gateway.edge.messenger.live.com
64.4.46.167	A	baymsgr2012220.gateway.edge.messenger.live.com
64.4.46.176	PTR	baymsgr2012319.gateway.edge.messenger.live.com
64.4.46.204	A	baymsgr2012402.gateway.messenger.live.com
64.4.46.210	A+PTR	baymsgr2012408.gateway.messenger.live.com
64.4.46.220	A	baymsgr2012502.gateway.messenger.live.com
64.4.46.221	A	baymsgr2012503.gateway.messenger.live.com
64.4.46.226	A+PTR	baymsgr2012508.gateway.messenger.live.com
64.4.46.227	PTR	baymsgr2012509.gateway.messenger.live.com
64.4.46.228	A+PTR	baymsgr2012510.gateway.messenger.live.com
64.4.46.236	A	baymsgr2012602.gateway.messenger.live.com
64.4.46.237	A	baymsgr2012603.gateway.messenger.live.com
64.4.46.242	A+PTR	baymsgr2012608.gateway.messenger.live.com
64.4.46.243	PTR	baymsgr2012609.gateway.messenger.live.com
64.4.46.252	A	baymsgr2012702.gateway.messenger.live.com
64.4.47.0	A+PTR	baymsgr2012706.gateway.messenger.live.com
64.4.47.1	A+PTR	baymsgr2012707.gateway.messenger.live.com
64.4.47.13	A	baymsgr2012803.gateway.messenger.live.com
64.4.47.15	A	baymsgr2012805.gateway.messenger.live.com
64.4.47.29	A	baymsgr2012903.gateway.messenger.live.com
64.4.47.30	A	baymsgr2012904.gateway.messenger.live.com
64.4.47.31	A	baymsgr2012905.gateway.messenger.live.com
64.4.47.32	A	baymsgr2012906.gateway.messenger.live.com
64.4.47.35	A+PTR	baymsgr2012909.gateway.messenger.live.com