Robtex

Up: 66.244.160.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 66.244.160.0/21
Down right: 66.244.168.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
66.244.160.0	PTR	0.160.244.66.biz.sta.networkgci.net
66.244.160.16	A+PTR	16.160.244.66.biz.sta.networkgci.net
66.244.160.24	A	24.160.244.66.biz.sta.networkgci.net
66.244.160.32	PTR	32.160.244.66.biz.sta.networkgci.net
66.244.160.48	PTR	48.160.244.66.biz.sta.networkgci.net
66.244.160.64	PTR	64.160.244.66.biz.sta.networkgci.net
66.244.160.80	PTR	80.160.244.66.biz.sta.networkgci.net
66.244.160.96	PTR	96.160.244.66.biz.sta.networkgci.net
66.244.160.98	A	host34.csmgsports.com
66.244.160.99	A	mail.csmgsports.com
66.244.160.172	A	hoopsforlife.org
66.244.160.178	PTR	smtpd002.intermedia.net
66.244.160.226	A+PTR	226.160.244.66.biz.sta.networkgci.net
66.244.161.2	A	contcred.fmsi-contractorscredit.com
66.244.161.35	A	smtp.novafp.com
66.244.161.218	A	pomescrowservices.com
66.244.161.234	A	portal.kimcocorp.com
66.244.163.115	PTR	stemail.stedna.org
66.244.167.6	A	6.167.244.66.biz.sta.networkgci.net
66.244.167.179	PTR	asco2.americanschool.org
66.244.167.179	A	mail.americanschool.org
66.244.168.34	A	mail.cedchicago.com
66.244.168.191	A	191.168.244.66.biz.sta.networkgci.net
66.244.168.212	A	smtp.mifab.com
66.244.170.3	A	mail.asplaw.net
66.244.171.10	A	mail.searchqps.com
66.244.171.10	A	mail.quantumstaffing.com
66.244.171.33	A	66-244-171-33.ipv4.firstcomm.com
66.244.171.34	PTR	66-244-171-34.ipv4.firstcomm.com
66.244.171.34	A	mail.a2sales.com
66.244.171.34	A	mail.alliancesteelprocessing.com
66.244.171.35	A	66-244-171-35.ipv4.firstcomm.com
66.244.171.50	PTR	smtp.reynaulds.com
66.244.171.51	A+PTR	mail.reynaulds.com
66.244.171.51	A	mail.roco.com
66.244.171.51	A	mail.reynauld.com
66.244.171.53	A	monet.psys.org
66.244.171.99	A	mail.familymedicalgroup.org
66.244.172.8	A	8.172.244.66.biz.sta.networkgci.net
66.244.172.138	A	138.172.244.66.biz.sta.networkgci.net
66.244.174.29	A	66-244-174-29.ipv4.firstcomm.com
66.244.174.131	A+PTR	66-244-174-131.ipv4.firstcomm.com
66.244.174.131	A	derbymuseumstore.com
66.244.174.132	A	shop.mortonarb.org
66.244.174.133	A	www.ncmuseumofhistoryshop.com
66.244.174.157	A	66-244-174-157.ipv4.firstcomm.com
66.244.174.169	A	66-244-174-169.ipv4.firstcomm.com
66.244.175.11	A	wr-llp.us
66.244.175.71	A	vpn.kichler.com
66.244.175.76	A	portal.kichler.com
66.244.175.77	A	portaltest.kichler.com
66.244.175.79	A	edi.kichler.com
66.244.175.80	A	editest.kichler.com
66.244.175.81	PTR	mail.kichler.com
66.244.175.81	A	clv1wpe02.kichler.net
66.244.175.81	A	clv1wpe02.kichler.com