Robtex

Up: 204.122.0.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 204.122.8.0/22
Down right: 204.122.12.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
204.122.8.2	A	host8-2.caxt.com
204.122.8.11	PTR	host8-11.caxt.com
204.122.8.25	PTR	host8-25.caxt.com
204.122.10.3	A	host10-3.caxt.com
204.122.10.13	A	cnjsmtp01.caxt.com
204.122.10.13	A	cnjsmtp11.caxton.com
204.122.10.15	A	njmail.caxton.com
204.122.10.20	A	ns1.caxt.com
204.122.10.25	A	host10-245.caxt.com
204.122.10.25	A	host10-141.caxt.com
204.122.10.25	A	host10-103.caxt.com
204.122.10.50	A	cnjsmtp01.caxtonadvantage.com
204.122.10.67	PTR	host10-67.caxt.com
204.122.10.72	PTR	host10-72.caxt.com
204.122.10.130	PTR	host10-130.caxt.com
204.122.10.152	PTR	host10-152.caxt.com
204.122.12.68	A+PTR	cpasmtp11.caxton.com
204.122.12.68	A	cnysmtp01.caxt.com