Robtex

Up: 12.31.126.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 12.31.127.0/25
Down right: 12.31.127.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
12.31.127.4	A+PTR	nat1.cdg.ws
12.31.127.77	A	mbstest.cdg.ws
12.31.127.81	PTR	exchange.cdg.ws
12.31.127.81	A	autodiscover.cdg.ws
12.31.127.132	A	communicationsdatagroup.org
12.31.127.132	A	communicationsdatagroup.com
12.31.127.132	A	commdatagroup.com
12.31.127.136	A	transfer.cdg.ws
12.31.127.144	A+PTR	citrix.cdg.ws
12.31.127.159	A+PTR	www.cdg.ws
12.31.127.159	A	cdg.ws
12.31.127.186	A	ns3.cdg.ws
12.31.127.187	A	ns4.cdg.ws