Robtex

Up: 66.112.72.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 66.112.72.0/23
Down right: 66.112.74.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
66.112.72.14	PTR	66-112-72-14.stat.centurytel.net
66.112.72.14	A	mail.applebyhealy.com
66.112.72.14	A	mail.applebylaw.com
66.112.72.118	A	66-112-72-118.dyn.centurytel.net
66.112.72.194	PTR	66-112-72-194.stat.centurytel.net
66.112.72.194	A	marritza.com
66.112.72.194	A	www.marritza.com
66.112.72.217	PTR	66-112-72-217.stat.centurytel.net
66.112.73.37	PTR	66-112-73-37.sta.centurytel.net
66.112.73.55	PTR	66-112-73-55.sta.centurytel.net
66.112.73.80	A	mail.tc-stainless.com
66.112.73.117	A	omuvs.com
66.112.73.187	PTR	mail.rbattorney.net
66.112.73.187	A	rtrserver.rtrattorneys.com
66.112.73.187	A	remote.rbattorneys.net
66.112.74.1	PTR	66-112-74-1.stat.centurytel.net
66.112.74.201	PTR	66-112-74-201.stat.centurytel.net
66.112.74.201	A	hvglaw.com
66.112.74.201	A	montebaker.com
66.112.74.240	PTR	66-112-74-240.stat.centurytel.net
66.112.75.22	PTR	66-112-75-22.stat.centurytel.net
66.112.75.43	A	mail.dcarrinvestments.com
66.112.75.52	PTR	66-112-75-52.stat.centurytel.net
66.112.75.72	PTR	66-112-75-72.stat.centurytel.net
66.112.75.104	PTR	66-112-75-104.stat.centurytel.net
66.112.75.105	PTR	66-112-75-105.stat.centurytel.net
66.112.75.159	PTR	66-112-75-159.stat.centurytel.net
66.112.75.183	PTR	66-112-75-183.stat.centurytel.net
66.112.75.184	PTR	66-112-75-184.stat.centurytel.net
66.112.75.190	PTR	kalira.horseherd.org
66.112.75.192	PTR	66-112-75-192.stat.centurytel.net
66.112.75.213	A	baycreekinc.com
66.112.75.217	PTR	66-112-75-217.stat.centurytel.net
66.112.75.247	PTR	66-112-75-247.stat.centurytel.net