Robtex

Up: 74.84.8.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 74.84.8.0/25
Down right: 74.84.8.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
74.84.8.2	A+PTR	zoot.centex.net
74.84.8.11	A+PTR	armstx.com
74.84.8.11	PTR	beaversbulls.com
74.84.8.11	PTR	bluelacybreeder.com
74.84.8.12	A	mailadmin.centex.net
74.84.8.17	PTR	core17.centex.net
74.84.8.17	A	mail.fiberfly.net
74.84.8.21	A+PTR	ns1.centex.net
74.84.8.22	A+PTR	ns2.centex.net
74.84.8.26	A+PTR	ns3.centex.net
74.84.8.27	PTR	core27.centex.net
74.84.8.27	A	ns4.centex.net
74.84.8.29	PTR	core29.centex.net
74.84.8.30	PTR	cnbss.com
74.84.8.30	PTR	priddyisd.net
74.84.8.30	PTR	cttcmaps.centexnet.com
74.84.8.46	PTR	vpn.centexnet.com
74.84.8.46	PTR	74-84-8-46.centex.net
74.84.8.82	PTR	mail.centex.net
74.84.8.83	A+PTR	mail.centexnet.com
74.84.8.87	A+PTR	mail.lometaisd.net
74.84.8.135	A+PTR	centexnet.com
74.84.8.135	A+PTR	www.centexnet.com
74.84.8.135	PTR	74-84-8-135.centex.net