Robtex

Up: 64.141.8.0/21
Can't show all results, try to descend to a more specific CIDR
Down left: 64.141.8.0/23
Down right: 64.141.10.0/23
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
64.141.8.2	PTR	h64-141-8-2.bigpipeinc.com
64.141.8.2	A	rtns.ca
64.141.8.10	A+PTR	mail.pulseair.ca
64.141.8.18	PTR	h64-141-8-18.bigpipeinc.com
64.141.8.18	A	crm.bcmb.ab.ca
64.141.8.18	A	portal.bcmb.ab.ca
64.141.8.38	PTR	h64-141-8-38.bigpipeinc.com
64.141.8.52	PTR	h64-141-8-52.bigpipeinc.com
64.141.8.66	PTR	h64-141-8-66.bigpipeinc.com
64.141.8.67	PTR	h64-141-8-67.bigpipeinc.com
64.141.8.67	A	lyncdiscover.ledcor.com
64.141.8.68	A	sip-edmonton.ledcor.com
64.141.8.76	PTR	mail.countybarrhead.ab.ca
64.141.8.101	PTR	drakkcoil.com
64.141.8.162	A+PTR	mail.ampersand27.com
64.141.8.162	PTR	mail.hotelsonwhyte.com
64.141.8.162	A+PTR	mail.matrixedmonton.com
64.141.8.165	A	mail.bniexpress.com
64.141.8.165	A	mail.westcorp.net
64.141.8.171	A	sip.westcorp.net
64.141.8.174	A+PTR	mx1.westcorp.net
64.141.8.174	A	mail.versusliving.com
64.141.8.174	A	mail.heritagestation.ca
64.141.8.186	A	mail.scottpumpservice.com
64.141.8.196	PTR	h64-141-8-196.bigpipeinc.com
64.141.8.196	A	barracuda.digitaltea.com
64.141.8.234	PTR	h64-141-8-234.bigpipeinc.com
64.141.9.1	PTR	mail.npcgroup.ca
64.141.9.1	A	matrix-wear.net
64.141.9.1	A	ampconst.net
64.141.9.69	PTR	h64-141-9-69.bigpipeinc.com
64.141.9.69	A	wsfile.com
64.141.9.132	PTR	h64-141-9-132.bigpipeinc.com
64.141.9.142	PTR	h64-141-9-142.bigpipeinc.com
64.141.9.142	A	sip.sureway.ca
64.141.9.155	A	mail.sureway.ca
64.141.9.155	A	owa.sureway.ca
64.141.9.251	PTR	h64-141-9-251.bigpipeinc.com
64.141.9.251	A	remote.lah.ca
64.141.10.0	PTR	h64-141-10-0.bigpipeinc.com
64.141.10.2	PTR	h64-141-10-2.bigpipeinc.com
64.141.10.4	PTR	h64-141-10-4.bigpipeinc.com
64.141.10.10	PTR	h64-141-10-10.bigpipeinc.com
64.141.10.12	PTR	h64-141-10-12.bigpipeinc.com
64.141.10.19	PTR	h64-141-10-19.bigpipeinc.com
64.141.10.20	PTR	h64-141-10-20.bigpipeinc.com
64.141.10.20	A	regina.mnp.ca
64.141.10.21	PTR	h64-141-10-21.bigpipeinc.com
64.141.10.29	PTR	h64-141-10-29.bigpipeinc.com
64.141.10.36	PTR	mail.ieep.ca
64.141.10.36	A+PTR	vpn.ieep.ca
64.141.10.38	A	ns2.atanames.ca
64.141.10.38	A	ionfs1.atanames.ca
64.141.10.43	PTR	h64-141-10-43.bigpipeinc.com
64.141.10.51	PTR	h64-141-10-51.bigpipeinc.com
64.141.10.59	PTR	h64-141-10-59.bigpipeinc.com
64.141.10.74	PTR	h64-141-10-74.bigpipeinc.com
64.141.10.74	A	d3-origin.ama.ab.ca
64.141.10.80	PTR	h64-141-10-80.bigpipeinc.com
64.141.10.82	PTR	h64-141-10-82.bigpipeinc.com
64.141.10.82	A	myndt.ca
64.141.10.82	A	www.nortechadvanced.com
64.141.10.86	PTR	h64-141-10-86.bigpipeinc.com
64.141.10.90	PTR	h64-141-10-90.bigpipeinc.com
64.141.10.99	PTR	h64-141-10-99.bigpipeinc.com
64.141.10.99	A	yomojiapp.com
64.141.10.99	A	blackhawk.zu.com
64.141.10.101	PTR	h64-141-10-101.bigpipeinc.com
64.141.10.107	PTR	h64-141-10-107.bigpipeinc.com
64.141.10.107	A	nitehawk.zu.com
64.141.10.109	PTR	h64-141-10-109.bigpipeinc.com
64.141.10.116	PTR	h64-141-10-116.bigpipeinc.com
64.141.10.123	PTR	h64-141-10-123.bigpipeinc.com
64.141.10.123	A	mail.rigmail.ca
64.141.10.135	PTR	h64-141-10-135.bigpipeinc.com
64.141.10.139	PTR	h64-141-10-139.bigpipeinc.com
64.141.10.142	PTR	h64-141-10-142.bigpipeinc.com
64.141.10.143	PTR	h64-141-10-143.bigpipeinc.com
64.141.10.145	PTR	h64-141-10-145.bigpipeinc.com
64.141.10.150	PTR	h64-141-10-150.bigpipeinc.com
64.141.10.152	PTR	h64-141-10-152.bigpipeinc.com
64.141.10.154	PTR	h64-141-10-154.bigpipeinc.com
64.141.10.154	A	fathsports.com
64.141.10.154	A	aubroservices.com
64.141.10.155	PTR	mail.ohanlonpaving.com
64.141.10.170	A+PTR	mail.cpdist.ca
64.141.10.170	A	mx1.cpdist.ca
64.141.10.170	A	mail.unitedgroup.ca
64.141.10.171	PTR	h64-141-10-171.bigpipeinc.com
64.141.10.173	PTR	h64-141-10-173.bigpipeinc.com
64.141.10.173	A	mail.brainwire.ca
64.141.10.173	A	mail.xorz.ca
64.141.10.180	PTR	h64-141-10-180.bigpipeinc.com
64.141.10.181	PTR	h64-141-10-181.bigpipeinc.com
64.141.10.185	PTR	h64-141-10-185.bigpipeinc.com
64.141.10.190	PTR	h64-141-10-190.bigpipeinc.com
64.141.10.190	A	ns1.legumexwalker.ca
64.141.10.195	PTR	h64-141-10-195.bigpipeinc.com
64.141.10.203	PTR	h64-141-10-203.bigpipeinc.com
64.141.10.217	PTR	h64-141-10-217.bigpipeinc.com
64.141.10.217	A	www.clrs.org
64.141.10.217	A	*.clrs.org
64.141.10.218	PTR	h64-141-10-218.bigpipeinc.com
64.141.10.220	PTR	h64-141-10-220.bigpipeinc.com
64.141.10.224	PTR	h64-141-10-224.bigpipeinc.com
64.141.10.228	PTR	h64-141-10-228.bigpipeinc.com
64.141.10.231	PTR	h64-141-10-231.bigpipeinc.com
64.141.10.234	PTR	h64-141-10-234.bigpipeinc.com
64.141.10.239	PTR	h64-141-10-239.bigpipeinc.com
64.141.10.241	PTR	h64-141-10-241.bigpipeinc.com
64.141.10.245	PTR	h64-141-10-245.bigpipeinc.com
64.141.10.249	PTR	h64-141-10-249.bigpipeinc.com
64.141.10.252	PTR	h64-141-10-252.bigpipeinc.com
64.141.11.6	A+PTR	gateway.npcgroup.ca
64.141.11.58	PTR	h64-141-11-58.bigpipeinc.com
64.141.11.58	A	remnantsofarthas.com
64.141.11.66	A	polarfuel.biz
64.141.11.66	A	polarfuel.info
64.141.11.66	A	thedecalshop.ca
64.141.11.84	PTR	h64-141-11-84.bigpipeinc.com
64.141.11.84	A	mail.iuoe955union.com
64.141.11.84	A	mail.oe955.com
64.141.11.130	PTR	h64-141-11-130.bigpipeinc.com
64.141.11.130	A	mail.comco-controls.com
64.141.11.130	A	mail.cel-electrical.com
64.141.11.139	PTR	h64-141-11-139.bigpipeinc.com
64.141.11.139	A	rsline.ca
64.141.11.150	A	smtp2.qlinetrucking.com
64.141.11.163	A+PTR	scan.coveproperties.ca
64.141.11.163	A	scan.jb3.ca
64.141.11.163	A	scan.cove.ca
64.141.11.164	A	mail.coveproperties.ca
64.141.11.165	PTR	h64-141-11-165.bigpipeinc.com
64.141.11.165	A	mail.jb3.ca
64.141.11.167	A	mail.crockett-communications.com
64.141.11.167	A	mail.jvcconstruction.ca
64.141.11.189	PTR	h64-141-11-189.bigpipeinc.com
64.141.11.195	A	esa.morris-industries.net
64.141.11.200	A	mx01.morris-industries.net
64.141.11.200	A	mail.morris-industries.com
64.141.11.200	A	mx13.morris-industries.net
64.141.11.222	PTR	h64-141-11-222.bigpipeinc.com
64.141.11.222	A	munilink.net
64.141.11.222	A	www.munilink.net
64.141.11.226	A	mx1.bavariabmw.ca
64.141.11.230	A	mail2.buildingtechnologies.com