Robtex

Up: 206.196.240.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 206.196.240.0/23
Down right: 206.196.242.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
206.196.241.10	A+PTR	outbound1.cmc.com
206.196.241.21	A+PTR	am.cmc.com
206.196.241.42	A	meet.cmc.com
206.196.241.42	A	dialin.cmc.com
206.196.241.42	A	gdcofficewebapp.cmc.com
206.196.241.50	PTR	cmc.com
206.196.241.50	PTR	newellrecyclingsa.com
206.196.241.50	PTR	cmccometals.com.au
206.196.241.99	A	mobile.cmc.com
206.196.242.150	A+PTR	service.cmc.com
206.196.242.160	A	testdp1.cmc.com
206.196.242.254	A	partner.cmc.com
206.196.243.12	A+PTR	smtp1.cmc.com
206.196.243.13	A+PTR	smtp2.cmc.com
206.196.243.13	A	cmcrecycling.com
206.196.243.13	A	www.cmcsteel-tx.com
206.196.243.16	A	am-ftp.cmc.com
206.196.243.16	A	adhoc.cmc.com
206.196.243.17	PTR	ns1.cmc.com
206.196.243.34	PTR	autodiscover.cmc.com
206.196.243.34	A+PTR	cmcselfserviceportal.cmc.com
206.196.243.34	A+PTR	cmcselfserviceportalreg.cmc.com
206.196.243.39	A	rest.cmc.com
206.196.243.44	PTR	206.196.243.44.cmc.com
206.196.243.46	PTR	206.196.243.46.cmc.com
206.196.243.54	A	portal.cmc.com
206.196.243.69	A+PTR	ns2.cmc.com
206.196.243.81	A	www.smisteel.com
206.196.243.81	A	www.cmc.com
206.196.243.82	PTR	cmceve01a.cmc.com
206.196.243.82	PTR	cmceve02a.cmc.com
206.196.243.82	A+PTR	globalnet.cmc.com
206.196.243.84	PTR	cmcupullnsave.cmc.com
206.196.243.86	A	cmcselfserviceportal.cmc.com
206.196.243.86	A	cmcselfserviceportalreg.cmc.com
206.196.243.153	A	web103t.am.cmc.com