Robtex

Up: 66.112.16.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 66.112.17.0/25
Down right: 66.112.17.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
66.112.17.15	A+PTR	clec523.customer.centurytel.net
66.112.17.21	A+PTR	clec529.customer.centurytel.net
66.112.17.22	A	mail.pelstate.com
66.112.17.36	A+PTR	clec544.customer.centurytel.net
66.112.17.45	A+PTR	clec553.customer.centurytel.net
66.112.17.47	A+PTR	clec555.customer.centurytel.net
66.112.17.63	A+PTR	clec571.customer.centurytel.net
66.112.17.66	PTR	clec574.customer.centurytel.net
66.112.17.66	A	pmitimeclock.com
66.112.17.66	A	pmipayroll.com
66.112.17.67	PTR	clec575.customer.centurytel.net
66.112.17.72	A	smtp.asktds.com
66.112.17.72	A	clec580.customer.centurytel.net
66.112.17.72	A	smtp1.trusteddatasolutions.com
66.112.17.76	A	clec584.customer.centurytel.net
66.112.17.78	A+PTR	clec586.customer.centurytel.net
66.112.17.88	A+PTR	clec596.customer.centurytel.net
66.112.17.99	A+PTR	clec607.customer.centurytel.net
66.112.17.122	A+PTR	clec630.customer.centurytel.net
66.112.17.130	A+PTR	clec638.customer.centurytel.net
66.112.17.132	A+PTR	clec640.customer.centurytel.net
66.112.17.144	A+PTR	clec652.customer.centurytel.net
66.112.17.155	A+PTR	mail.pelicanmga.com
66.112.17.162	A	clec670.customer.centurytel.net
66.112.17.162	A	obwebserver.caddoclerk.com
66.112.17.164	A+PTR	clec672.customer.centurytel.net
66.112.17.164	A	www.caddoclerk.com
66.112.17.164	A	*.caddoclerk.com
66.112.17.166	A	webserver.caddoclerk.com
66.112.17.209	A+PTR	clec717.customer.centurytel.net
66.112.17.211	A+PTR	clec719.customer.centurytel.net
66.112.17.219	A+PTR	clec727.customer.centurytel.net
66.112.17.220	A+PTR	clec728.customer.centurytel.net
66.112.17.231	A+PTR	clec739.customer.centurytel.net