Robtex

Up: 13.107.42.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 13.107.42.0/25
Down right: 13.107.42.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
13.107.42.1	A	ns1.l-msedge.net
13.107.42.2	A	ns2.l-msedge.net
13.107.42.10	A	a15b202b7c4a7094a0f77b2aa6214c8a.clo.footprintdns.com
13.107.42.10	A	007ef78f3ff87a288fd0c6c7972c4dab.clo.footprintdns.com
13.107.42.10	A	1578e6f96f960b4dbde7503c8319b031.clo.footprintdns.com
13.107.42.11	A	izmalkin.ru
13.107.42.11	A	l-0002.l-msedge.net
13.107.42.12	A+PTR	1drv.ms
13.107.42.12	A	l-0003.l-msedge.net
13.107.42.12	A	sdrv.ms
13.107.42.13	A	l-0004.l-msedge.net
13.107.42.14	A	linkedin.com
13.107.42.14	A	l-0005.l-msedge.net
13.107.42.14	A	afd-l-anycast.linkedin.com
13.107.42.15	A	l-0006.l-msedge.net
13.107.42.16	A	l-0007.l-msedge.net
13.107.42.16	A	web-cache-a.com
13.107.42.18	A	kairodemo.vssps.visualstudio.com
13.107.42.18	A	symetra.vssps.visualstudio.com
13.107.42.18	A	monyx.vssps.visualstudio.com
13.107.42.20	A	devppe.azure.com
13.107.42.20	A	dev.azure.com
13.107.42.20	A	devopsppe.azure.com
13.107.42.21	A	l-0012.l-msedge.net
13.107.42.22	A	l-0013.l-msedge.net
13.107.42.254	A	l-9999.l-msedge.net