Robtex

Up: 65.54.198.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 65.54.199.0/25
Down right: 65.54.199.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
65.54.199.71	PTR	pws.gallery.live-int.com
65.54.199.140	PTR	getwindowslive.at
65.54.199.140	PTR	getlive.be
65.54.199.140	PTR	getwindowslive.be
65.54.199.149	A+PTR	tryt.msn.com
65.54.199.182	A+PTR	editorial.join.msn-ppe.com
65.54.199.184	A+PTR	get.live-ppe.com
65.54.199.184	A+PTR	join.msn-ppe.com
65.54.199.184	A	messenger.live-ppe.com
65.54.199.186	A	editorial.get.live-ppe.com
65.54.199.187	A+PTR	intaglio.microsoft.com
65.54.199.187	A+PTR	editorial.get.live.com
65.54.199.187	PTR	editorial.intaglio.microsoft.com
65.54.199.189	PTR	tryt.msn.com
65.54.199.196	PTR	vlan450.tuk-6nf-10b.ntwk.msn.net
65.54.199.196	A	gs.db3.msedge.net