Robtex

Up: 66.220.128.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 66.220.128.0/21
Down right: 66.220.136.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
66.220.128.1	A+PTR	core-1.cvctx.com
66.220.128.2	A+PTR	dns1.cvctx.com
66.220.128.2	A	ns1.cvtv.net
66.220.128.2	A	ftp.cvctx.com
66.220.128.18	A+PTR	mail.coloradovalley.com
66.220.128.18	A	meridianlte.net
66.220.128.19	A+PTR	core-19.cvctx.com
66.220.128.25	A	core-25.cvctx.com
66.220.128.33	A	core-33.cvctx.com
66.220.128.35	A	core-35.cvctx.com
66.220.128.50	A	core-50.cvctx.com
66.220.128.52	A	core-52.cvctx.com
66.220.128.54	A	core-54.cvctx.com
66.220.128.57	A	core-57.cvctx.com
66.220.128.68	A	core-68.cvctx.com
66.220.128.75	A	core-75.cvctx.com
66.220.128.80	A	core-80.cvctx.com
66.220.128.84	A	core-84.cvctx.com
66.220.128.90	A	core-90.cvctx.com
66.220.128.90	A	speedtest.coloradovalley.com
66.220.128.97	A	core-97.cvctx.com
66.220.128.102	A	core-102.cvctx.com
66.220.128.105	A	core-105.cvctx.com
66.220.128.107	A	topaz.carltonusa.com
66.220.128.119	A	core-119.cvctx.com
66.220.128.120	A	core-120.cvctx.com
66.220.128.123	A	core-123.cvctx.com
66.220.128.123	A	core-123.cvtv.net
66.220.128.138	A	core-138.cvctx.com
66.220.128.140	A	core-140.cvctx.com
66.220.128.150	A	core-150.cvctx.com
66.220.128.152	A	core-152.cvctx.com
66.220.128.164	A	core-164.cvctx.com
66.220.128.167	A	core-167.cvctx.com
66.220.128.168	A	core-168.cvctx.com
66.220.128.169	A	core-169.cvctx.com
66.220.128.176	A	core-176.cvctx.com
66.220.128.180	A	core-180.cvctx.com
66.220.128.187	A	core-187.cvctx.com
66.220.128.195	A	core-195.cvctx.com
66.220.128.197	A	core-197.cvctx.com
66.220.128.201	A	core-201.cvctx.com
66.220.128.203	A	core-203.cvctx.com
66.220.128.210	A	core-210.cvctx.com
66.220.128.213	A	core-213.cvctx.com
66.220.128.219	A	core-219.cvctx.com
66.220.128.220	A	core-220.cvctx.com
66.220.128.225	A	core-225.cvctx.com
66.220.128.240	A	core-240.cvctx.com
66.220.128.244	A	core-244.cvctx.com
66.220.128.248	A	core-248.cvctx.com
66.220.128.249	A	core-249.cvctx.com
66.220.129.2	A	wireless-schlbrg-2.cvctx.com
66.220.129.22	A	wireless-schlbrg-22.cvctx.com
66.220.129.24	A	wireless-schlbrg-24.cvctx.com
66.220.129.56	A	wireless-schlbrg-56.cvctx.com
66.220.129.254	A	net9-254.cvctx.com
66.220.130.3	A	dsl-zstatic-3.cvctx.com
66.220.130.10	A	host.rhinomachinery.com
66.220.130.26	A	mail.eagle-bank.com
66.220.130.26	A	email.roundtopstatebank.com
66.220.130.27	A	dsl-zstatic-27.cvctx.com
66.220.130.43	A	dsl-zstatic-43.cvctx.com
66.220.130.177	A	dsl-zstatic-177.cvctx.com
66.220.130.217	A	dsl-zstatic-217.cvctx.com
66.220.131.3	PTR	dsl-tstatic-3.cvctx.com
66.220.131.3	A	hbarjranch.com
66.220.131.3	A	winklersac.com
66.220.131.18	A	ww2.shroyco.com
66.220.131.34	A	dsl-tstatic-34.cvctx.com
66.220.131.66	PTR	dsl-t1-66.cvctx.com
66.220.131.66	A	muldoonminerals.com
66.220.131.75	A	mail.eagle-bank.com
66.220.131.75	A	email.roundtopstatebank.com
66.220.131.78	A	dsl-tstatic-78.cvctx.com
66.220.132.68	A	dsl-tpool1-68.cvctx.com
66.220.132.175	A	dsl-tpool1-175.cvtv.net
66.220.133.143	A	dsl-tpool2-143.cvctx.com
66.220.133.230	A	dsl-tpool2-230.cvtv.net
66.220.134.38	A	dsl-tpool3-38.cvctx.com
66.220.134.251	A	dsl-tpool3-251.cvtv.net
66.220.135.2	A	dsl-tpool4-2.cvctx.com
66.220.135.21	A	dsl-tpool4-21.cvctx.com
66.220.135.36	A	dsl-tpool4-36.cvctx.com
66.220.135.73	A	dsl-tpool4-73.cvctx.com
66.220.135.131	A	dsl-tpool4-131.cvctx.com
66.220.135.156	A	dsl-tpool4-156.cvctx.com
66.220.135.180	A	dsl-tpool4-180.cvctx.com
66.220.136.4	A	wireless-wmr-4.cvctx.com
66.220.136.52	A	wireless-wmr-52.cvtv.net
66.220.136.54	A	wireless-wmr-54.cvctx.com
66.220.136.59	A	wireless-wmr-59.cvctx.com
66.220.136.71	A	wireless-wmr-71.cvctx.com
66.220.136.169	A	wireless-wmr-169.cvctx.com
66.220.136.193	A	wireless-wmr-193.cvctx.com
66.220.136.199	A	wireless-wmr-199.cvctx.com
66.220.136.233	A	wireless-wmr-233.cvctx.com
66.220.137.2	PTR	wireless-lg-2.cvctx.com
66.220.137.8	A	mail2.nbt-texas.com
66.220.137.14	A	wireless-lg-14.cvctx.com
66.220.137.70	A	wireless-lg-70.cvctx.com
66.220.137.75	A	ww2.befcoengineering.com
66.220.137.104	A	wireless-lg-104.cvctx.com
66.220.137.130	A+PTR	wireless-lg-130.cvctx.com
66.220.137.161	A+PTR	wireless-lg-161.cvctx.com
66.220.137.176	PTR	wireless-lg-176.cvctx.com
66.220.138.1	A	wireless-fytvll-1.cvctx.com
66.220.138.5	A	wireless-fytvll-5.cvctx.com
66.220.138.49	PTR	wireless-fytvll-49.cvctx.com
66.220.138.49	A	wireless-fytvll-49.cvtv.net
66.220.138.89	A	wireless-fytvll-89.cvctx.com
66.220.139.3	A	net10-3.cvctx.com
66.220.139.7	A	net10-7.cvctx.com
66.220.139.8	A	net10-8.cvctx.com
66.220.139.10	A	net10-10.cvctx.com
66.220.139.35	A	net10-35.cvctx.com
66.220.139.37	A	net10-37.cvctx.com
66.220.139.55	A	net10-55.cvctx.com
66.220.139.65	A+PTR	net10-65.cvctx.com
66.220.139.67	A	net10-67.cvctx.com
66.220.139.106	A	net10-106.cvctx.com
66.220.139.130	A	net10-130.cvctx.com
66.220.140.3	A	dsl-tpool5-3.cvctx.com
66.220.140.8	A	dsl-tpool5-8.cvctx.com
66.220.140.13	A	dsl-tpool5-13.cvctx.com
66.220.140.65	A+PTR	dsl-tpool5-65.cvctx.com
66.220.140.149	A	dsl-tpool5-149.cvctx.com
66.220.140.173	A	dsl-tpool5-173.cvtv.net
66.220.141.19	A+PTR	dsl-tpool6-19.cvctx.com
66.220.141.70	A	dsl-tpool6-70.cvctx.com
66.220.141.72	A	dsl-tpool6-72.cvctx.com
66.220.141.149	A	dsl-tpool6-149.cvctx.com
66.220.141.171	A	dsl-tpool6-171.cvctx.com
66.220.141.179	A	dsl-tpool6-179.cvctx.com
66.220.142.29	A	dsl-tpool7-29.cvctx.com
66.220.142.60	A	dsl-tpool7-60.cvctx.com
66.220.142.99	A	dsl-tpool7-99.cvctx.com
66.220.142.155	A	dsl-tpool7-155.cvctx.com
66.220.143.102	A	dsl-tpool8-102.cvctx.com
66.220.143.218	A	dsl-tpool8-218.cvctx.com