Robtex

Up: 64.43.232.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 64.43.234.0/24
Down right: 64.43.235.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
64.43.234.111	A	ns3.usg.com
64.43.234.113	A	ns6.usg.com
64.43.234.149	A	eservicests.usg.com
64.43.234.149	A	eservicessb.usg.com
64.43.234.149	A	eservicestr.usg.com
64.43.234.160	A+PTR	eservicesit.usg.com
64.43.234.161	A+PTR	eservicesat.usg.com
64.43.234.162	A	eservicesqa.usg.com
64.43.235.25	A+PTR	mail05.usg.com
64.43.235.25	A+PTR	npdc-smtp-01.usg.com