Robtex

Up: 204.174.214.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 204.174.215.0/25
Down right: 204.174.215.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
204.174.215.26	PTR	host26.215.174.204.in-addr.arpa
204.174.215.52	PTR	host52.215.174.204.in-addr.arpa
204.174.215.67	A+PTR	smtp.ypg.com
204.174.215.69	A+PTR	smtp2.ypg.com
204.174.215.159	PTR	host159.215.174.204.in-addr.arpa
204.174.215.198	PTR	host198.215.174.204.in-addr.arpa
204.174.215.200	PTR	host200.215.174.204.in-addr.arpa
204.174.215.201	A+PTR	smtp1.domdir.com
204.174.215.201	A	domdir.com
204.174.215.201	A	smtp.domdir.com
204.174.215.202	A+PTR	smtp2.domdir.com
204.174.215.202	A	smtp.domdir.com
204.174.215.202	A	smtp.disisupersite.net
204.174.215.204	PTR	host204.215.174.204.in-addr.arpa
204.174.215.245	PTR	host245.215.174.204.in-addr.arpa
204.174.215.245	A	ns2.domdir.com
204.174.215.248	PTR	host248.215.174.204.in-addr.arpa
204.174.215.248	PTR	host249.215.174.204.in-addr.arpa
204.174.215.252	PTR	host252.215.174.204.in-addr.arpa