Robtex

Up: 68.179.16.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 68.179.16.0/23
Down right: 68.179.18.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
68.179.16.0	A	static-68-179-16-0.ptr.terago.net
68.179.16.30	A+PTR	static-68-179-16-30.ptr.terago.net
68.179.16.55	A+PTR	static-68-179-16-55.ptr.terago.net
68.179.16.106	A+PTR	static-68-179-16-106.ptr.terago.net
68.179.16.107	PTR	static-68-179-16-107.ptr.terago.net
68.179.16.107	A	mail.globegeneral.net
68.179.16.107	A	smtp.globegeneral.net
68.179.16.113	A+PTR	mail.darcydeacon.com
68.179.16.113	A	mail.1200management.com
68.179.16.113	A	static-68-179-16-113.ptr.terago.net
68.179.16.121	PTR	static-68-179-16-121.ptr.terago.net
68.179.16.121	A	mail.llt.mb.ca
68.179.16.137	A+PTR	mx02.pbl.ca
68.179.16.137	A	mx02.arizonatabs.com
68.179.16.137	A	mail.argus.ca
68.179.16.162	A	static-68-179-16-162.ptr.terago.net
68.179.16.185	A+PTR	static-68-179-16-185.ptr.terago.net
68.179.16.185	A	nrg-surveys.com
68.179.16.185	A	nrg-focusgroups.com
68.179.16.188	A+PTR	static-68-179-16-188.ptr.terago.net
68.179.16.188	A	nrg-panels.com
68.179.16.189	A+PTR	mail.nrgresearchgroup.com
68.179.16.189	A	nrgresearchgroup.us
68.179.16.192	A+PTR	static-68-179-16-192.ptr.terago.net
68.179.16.193	A+PTR	static-68-179-16-193.ptr.terago.net
68.179.16.193	A	static-68-179-16-193.ptr.terago.ca
68.179.16.193	A	ns1.coloradgroup.com
68.179.16.194	PTR	static-68-179-16-194.ptr.terago.net
68.179.16.195	PTR	static-68-179-16-195.ptr.terago.net
68.179.16.196	A+PTR	static-68-179-16-196.ptr.terago.net
68.179.16.196	A	pub.coloradgroup.com
68.179.16.196	A	www.coloradgroup.com
68.179.16.197	PTR	static-68-179-16-197.ptr.terago.net
68.179.16.197	A	colorad-bsf01.coloradgroup.com
68.179.16.199	PTR	static-68-179-16-199.ptr.terago.net
68.179.16.219	A+PTR	static-68-179-16-219.ptr.terago.net
68.179.17.3	A+PTR	static-68-179-17-3.ptr.terago.net
68.179.17.11	A+PTR	static-68-179-17-11.ptr.terago.net
68.179.17.14	A+PTR	static-68-179-17-14.ptr.terago.net
68.179.17.16	A+PTR	static-68-179-17-16.ptr.terago.net
68.179.17.18	A+PTR	static-68-179-17-18.ptr.terago.net
68.179.17.21	A	static-68-179-17-21.ptr.terago.net
68.179.17.23	A+PTR	static-68-179-17-23.ptr.terago.net
68.179.17.37	A+PTR	static-68-179-17-37.ptr.terago.net
68.179.17.45	A+PTR	static-68-179-17-45.ptr.terago.net
68.179.17.46	A+PTR	static-68-179-17-46.ptr.terago.net
68.179.17.47	A+PTR	static-68-179-17-47.ptr.terago.net
68.179.17.72	A+PTR	static-68-179-17-72.ptr.terago.net
68.179.17.77	A+PTR	static-68-179-17-77.ptr.terago.net
68.179.17.99	A+PTR	static-68-179-17-99.ptr.terago.net
68.179.17.105	PTR	static-68-179-17-105.ptr.terago.net
68.179.17.118	A+PTR	static-68-179-17-118.ptr.terago.net
68.179.17.126	A+PTR	static-68-179-17-126.ptr.terago.net
68.179.17.127	A+PTR	static-68-179-17-127.ptr.terago.net
68.179.17.137	A	webmail.manitobaharvest.com
68.179.17.156	A+PTR	static-68-179-17-156.ptr.terago.net
68.179.17.159	A+PTR	static-68-179-17-159.ptr.terago.net
68.179.17.167	A+PTR	static-68-179-17-167.ptr.terago.net
68.179.17.171	A+PTR	static-68-179-17-171.ptr.terago.net
68.179.17.181	A	static-68-179-17-181.ptr.terago.net
68.179.17.183	A+PTR	static-68-179-17-183.ptr.terago.net
68.179.17.191	A+PTR	static-68-179-17-191.ptr.terago.net
68.179.17.197	A+PTR	static-68-179-17-197.ptr.terago.net
68.179.17.209	A+PTR	static-68-179-17-209.ptr.terago.net
68.179.17.211	A+PTR	static-68-179-17-211.ptr.terago.net
68.179.17.232	A+PTR	static-68-179-17-232.ptr.terago.net
68.179.17.234	A+PTR	static-68-179-17-234.ptr.terago.net
68.179.17.240	A+PTR	static-68-179-17-240.ptr.terago.net
68.179.17.242	A+PTR	static-68-179-17-242.ptr.terago.net
68.179.17.246	A+PTR	static-68-179-17-246.ptr.terago.net
68.179.18.2	A+PTR	static-68-179-18-2.ptr.terago.net
68.179.18.20	A+PTR	static-68-179-18-20.ptr.terago.net
68.179.18.23	A+PTR	static-68-179-18-23.ptr.terago.net
68.179.18.41	PTR	mail.amsc.mb.ca
68.179.18.41	A	smtp1.manitoba-aerospace.mb.ca
68.179.18.42	A+PTR	mail.manitoba-aerospace.mb.ca
68.179.18.42	A	smtp.amsc.mb.ca
68.179.18.42	A	smtp.mbcsc.com
68.179.18.43	PTR	static-68-179-18-43.ptr.terago.net
68.179.18.56	A+PTR	static-68-179-18-56.ptr.terago.net
68.179.18.63	A+PTR	static-68-179-18-63.ptr.terago.net
68.179.18.65	A+PTR	static-68-179-18-65.ptr.terago.net
68.179.18.65	A	mail.flyfastair.com
68.179.18.88	A+PTR	static-68-179-18-88.ptr.terago.net
68.179.18.108	A+PTR	static-68-179-18-108.ptr.terago.net
68.179.18.130	A+PTR	static-68-179-18-130.ptr.terago.net
68.179.18.130	A	mail.mondetta.org
68.179.18.130	A	mondetta.org
68.179.18.134	A+PTR	static-68-179-18-134.ptr.terago.net
68.179.18.135	A	mondetta.net
68.179.18.167	A+PTR	mail1.pbl.ca
68.179.18.167	A	static-68-179-18-167.ptr.terago.net
68.179.18.200	A+PTR	static-68-179-18-200.ptr.terago.net
68.179.18.216	A+PTR	static-68-179-18-216.ptr.terago.net
68.179.18.220	A+PTR	static-68-179-18-220.ptr.terago.net
68.179.18.247	A+PTR	static-68-179-18-247.ptr.terago.net
68.179.18.249	A+PTR	static-68-179-18-249.ptr.terago.net
68.179.19.1	PTR	rc1tg1.wp.voinetworks.net
68.179.19.16	PTR	static-68-179-19-16.ptr.terago.net
68.179.19.29	A+PTR	snexchange2010.southernnetwork.org
68.179.19.29	A	mail.anishcfs.org
68.179.19.29	A	webmail.anishcfs.org
68.179.19.37	A+PTR	static-68-179-19-37.ptr.terago.net
68.179.19.37	A	secfs.org
68.179.19.57	A+PTR	static-68-179-19-57.ptr.terago.net
68.179.19.65	A+PTR	owa.warehouseone.com
68.179.19.65	A	mail.warehouseone.com
68.179.19.70	PTR	static-68-179-19-70.ptr.terago.net
68.179.19.70	A	owa.warehouseone.com
68.179.19.72	A	ep.warehouseone.com
68.179.19.126	A+PTR	static-68-179-19-126.ptr.terago.net
68.179.19.141	A+PTR	static-68-179-19-141.ptr.terago.net
68.179.19.146	PTR	static-68-179-19-146.ptr.terago.net
68.179.19.146	A	evserver.bird.ca
68.179.19.147	PTR	static-68-179-19-147.ptr.terago.net
68.179.19.147	A	brdkasp02.bird.ca
68.179.19.147	A	brdkaspersky.bird.ca
68.179.19.169	A+PTR	mail.acs-nai.com
68.179.19.200	A+PTR	static-68-179-19-200.ptr.terago.net
68.179.19.200	A	mail2.winpak.com