Robtex

Up: 66.213.176.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 66.213.176.0/22
Down right: 66.213.180.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
66.213.176.1	A+PTR	tc1.tctelco.net
66.213.176.2	A+PTR	tc-1.tctelco.net
66.213.176.2	A+PTR	tc1.tctelco.net
66.213.176.3	PTR	tc-3.tctelco.net
66.213.176.3	A+PTR	tc2.tctelco.net
66.213.176.3	A+PTR	tc3.tctelco.net
66.213.176.4	PTR	mail.tctainc.net
66.213.176.4	PTR	webmail.tctainc.net
66.213.176.10	A	vmail.tctelco.net
66.213.176.11	A+PTR	speedtest.tctelco.net
66.213.176.18	A+PTR	helpme.tctelco.net
66.213.176.52	A+PTR	tc1.tctelco.net
66.213.176.53	A+PTR	tc1.tctelco.net
66.213.176.54	A+PTR	tc1.tctelco.net
66.213.176.55	A+PTR	tc1.tctelco.net
66.213.176.57	A+PTR	tc3.tctelco.net
66.213.176.58	A+PTR	tc3.tctelco.net
66.213.176.59	A+PTR	tc3.tctelco.net
66.213.176.60	A+PTR	tc3.tctelco.net
66.213.177.24	A	dhcp-66-213-177-24.tctainc.com
66.213.178.14	A	fpns1.lexinet.net
66.213.178.15	A	fpns3.lexinet.net
66.213.178.19	PTR	66-213-178.19.lexinet.net
66.213.178.19	A	www.lexinet.net
66.213.178.19	A	gafblog.lexinet.net
66.213.178.20	A	lexinet701.com
66.213.178.20	A	myprospectservices.com
66.213.178.21	A	lexinet701.com
66.213.178.26	A	blog.norandexmailboxmarketing.com
66.213.178.26	A	lexinetprints.com
66.213.178.36	A	buildsmartmarketing.com
66.213.178.37	A	heartpings.com
66.213.178.37	A	www.heartpings.com
66.213.178.41	PTR	66-213-178.41.lexinet.net
66.213.178.41	A	tpmco.com
66.213.178.41	A	personalmarketingco.com
66.213.178.48	A+PTR	mailhost.lexinet.net
66.213.178.48	A+PTR	mx.lexinet.net
66.213.178.48	A	mail.lexinet.net
66.213.178.50	A	myprospectservices.com
66.213.178.58	PTR	66-213-178.58.lexinet.net
66.213.178.58	A	blog.tpmco.com
66.213.178.60	A	prospectservice.lifewaystores.com
66.213.178.66	PTR	66-213-178.66.lexinet.net
66.213.178.66	A	lextest.com
66.213.178.66	A	www.lextest.com
66.213.178.78	A	lexmail.lexinet.net
66.213.178.245	A	mx.norandexmailboxmarketing.com
66.213.179.72	A	mail.usd481.org
66.213.180.195	A	mail.cgrove417.org
66.213.180.196	A	www.cgrove417.org
66.213.180.199	A	ftp.cgrove417.org
66.213.181.4	A+PTR	lockbox.lbfd.biz
66.213.181.6	PTR	pci23.pizzaco.net
66.213.181.13	A	ns1.lifechurchcouncilgrove.com
66.213.181.13	A	mail.lifechurchcouncilgrove.com
66.213.181.13	A	lifechurchcouncilgrove.com
66.213.181.25	A+PTR	bsd1.qualityprofile.com
66.213.181.25	A	bsd2.qualityprofile.com
66.213.181.100	A	mail.triopticon.com
66.213.181.100	A	mail.tortillawheel.com
66.213.181.100	A	triopticon.com
66.213.182.65	A	hosting.glanzer.org