Robtex

Up: 13.107.3.0/24
Can't show all results, try to descend to a more specific CIDR
Down left: 13.107.3.128/26
Down right: 13.107.3.192/26
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
13.107.3.128	A	statics.teams.skype.com
13.107.3.128	A	webhook.teams.skype.com
13.107.3.128	A	s-0001.s-msedge.net
13.107.3.129	A	s-0002.s-msedge.net
13.107.3.130	A	s-0003.s-msedge.net
13.107.3.254	A	s-9999.s-msedge.net