Robtex

Up: 72.8.128.0/17
Can't show all results, try to descend to a more specific CIDR
Down left: 72.8.192.0/19
Down right: 72.8.224.0/19
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
72.8.192.0	PTR	gpc-72-8-192-0-ne.gpcom.net
72.8.194.110	PTR	gpc-72-8-194-110-ne.gpcom.net
72.8.196.200	A	*.ncppd.net
72.8.196.200	A	ns1.ncppd.net
72.8.196.200	A	ns2.ncppd.net
72.8.200.48	A	mail.dixoncountysheriff.org
72.8.201.9	PTR	gpc-72-8-201-9-ne.gpcom.net
72.8.204.0	PTR	gpc-72-8-204-0-ne.gpcom.net
72.8.207.2	PTR	gpc-72-8-207-2-ne.gpcom.net
72.8.207.2	A	colonialhaven.com
72.8.207.2	A	mail.colonialhaven.com
72.8.207.150	A	mail.danko.net
72.8.207.150	A	office.danko.net
72.8.208.111	A	webmail.parkviewhome.net
72.8.209.85	A	mail.mlmh.org
72.8.209.237	PTR	gpc-72-8-209-237-ne.gpcom.net
72.8.212.40	PTR	gpc-72-8-212-40-ne.gpcom.net
72.8.212.52	A	mail.fvproduce.com
72.8.214.250	PTR	gpc-72-8-214-250-ne.gpcom.net
72.8.215.2	PTR	gpc-72-8-215-2-ne.gpcom.net
72.8.215.65	PTR	gpc-72-8-215-65-ne.gpcom.net
72.8.215.128	PTR	gpc-72-8-215-128-ne.gpcom.net
72.8.215.129	PTR	gpc-72-8-215-129-ne.gpcom.net
72.8.215.130	PTR	gpc-72-8-215-130-ne.gpcom.net
72.8.215.193	PTR	gpc-72-8-215-193-ne.gpcom.net
72.8.217.34	PTR	gpc-72-8-217-34-ne.gpcom.net
72.8.217.34	A	ns2.lb.amfirstonline.com
72.8.217.35	PTR	amfirstonline.com
72.8.217.35	A	www.amfirstonline.com
72.8.217.38	A	wi.amfirstbank.com
72.8.217.39	A+PTR	zixvpm01.amfirstbank.com
72.8.217.84	A+PTR	email.hilinecoop.com
72.8.217.129	A	mail.colglazierclinic.com
72.8.219.226	PTR	gpc-72-8-219-226-ne.gpcom.net
72.8.220.34	PTR	gpc-72-8-220-34-ne.gpcom.net
72.8.220.34	A	mail2.hillcrestnh.org
72.8.220.183	PTR	gpc-72-8-220-183-ne.gpcom.net
72.8.220.183	A	sitesbytyler.com
72.8.220.227	PTR	gpc-72-8-220-227-ne.gpcom.net
72.8.221.4	PTR	gpc-72-8-221-4-ne.gpcom.net
72.8.221.4	A+PTR	remote.wellness-partners.org
72.8.222.7	PTR	gpc-72-8-222-7-ne.gpcom.net
72.8.222.27	PTR	gpc-72-8-222-27-ne.gpcom.net
72.8.222.192	A	vkstore.com
72.8.222.205	PTR	gpc-72-8-222-205-ne.gpcom.net
72.8.224.90	PTR	gpc-72-8-224-90-ne.gpcom.net
72.8.227.152	A	kcsr.dynalias.com
72.8.230.107	PTR	gpc-72-8-230-107-ne.gpcom.net
72.8.232.70	PTR	gpc-72-8-232-70-ne.gpcom.net
72.8.233.137	A	mail.modernfarm.com
72.8.234.81	PTR	mail.chadronhospital.com
72.8.236.105	PTR	gpc-72-8-236-105-ne.gpcom.net
72.8.237.179	A	kuglercompany.com
72.8.237.179	A	mail.kuglercompany.com
72.8.238.105	PTR	gpc-72-8-238-105-ne.gpcom.net
72.8.238.105	A	redcloudlibrary.com
72.8.239.82	A	redcloudlibrary.com
72.8.240.3	PTR	gpc-72-8-240-3-ne.gpcom.net
72.8.240.7	PTR	gpc-72-8-240-7-ne.gpcom.net
72.8.240.53	PTR	gpc-72-8-240-53-ne.gpcom.net
72.8.240.165	A	remote.c4computers.net
72.8.240.222	PTR	gpc-72-8-240-222-ne.gpcom.net
72.8.240.226	A+PTR	mail.websterhospital.org
72.8.240.227	PTR	gpc-72-8-240-227-ne.gpcom.net
72.8.242.2	PTR	gpc-72-8-242-2-ne.gpcom.net
72.8.244.3	PTR	gpc-72-8-244-3-ne.gpcom.net
72.8.245.224	PTR	gpc-72-8-245-224-ne.gpcom.net
72.8.246.11	PTR	gpc-72.8.246.11-ne.gpcom.net
72.8.246.11	A	office.thomaslivestock.com
72.8.246.51	PTR	gpc-72.8.246.51-ne.gpcom.net
72.8.246.51	A	mail.laddertower.com
72.8.246.51	A	mail2.smeal.com
72.8.246.72	PTR	gpc-72.8.246.72-ne.gpcom.net
72.8.246.72	A	mail.adamslandandcattle.com
72.8.246.76	A	sfdpc.info
72.8.246.88	A	gfi.melham.org
72.8.246.92	A	mail.nesb.net
72.8.246.137	A	mail.laddertower.com
72.8.246.137	A	mail.smeal.com
72.8.246.138	PTR	smeal-gpc-72.8.246.138-ne.gpcom.net
72.8.246.138	A	fyresoft.net
72.8.246.141	A	mx1.smeal.com
72.8.246.174	A	occ-0-2438-879.1.nflxso.net
72.8.246.174	A	occ-0-2438-116.1.nflxso.net
72.8.246.237	PTR	bndl60.nflx1.blar.gpcom.net
72.8.246.237	A	ipv4-c001-oma001-greatplains-isp.ftl.nflxvideo.net
72.8.246.237	A	occ-2-2438-879.1.nflxso.net
72.8.247.89	A	wdesignea.com
72.8.247.89	A	goodlifedentalnp.com
72.8.247.89	A	www.wdesignea.com
72.8.247.109	A	mail.prairiewindpc.com
72.8.249.148	PTR	gpc-72-8-249-148-ne.gpcom.net
72.8.249.148	A	*.designinsight.net
72.8.249.148	A	designinsight.net
72.8.250.115	PTR	gpc-72-8-250-115-ne.gpcom.net
72.8.254.249	PTR	gpc-72-8-254-249-ne.gpcom.net