Robtex

Up: 64.141.32.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 64.141.40.0/22
Down right: 64.141.44.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
64.141.40.3	PTR	h64-141-40-3.bigpipeinc.com
64.141.40.11	PTR	h64-141-40-11.bigpipeinc.com
64.141.40.16	PTR	h64-141-40-16.bigpipeinc.com
64.141.40.16	A	sip.avanti.ca
64.141.40.19	PTR	h64-141-40-19.bigpipeinc.com
64.141.40.41	PTR	h64-141-40-41.bigpipeinc.com
64.141.40.56	PTR	h64-141-40-56.bigpipeinc.com
64.141.40.57	PTR	h64-141-40-57.bigpipeinc.com
64.141.40.58	PTR	h64-141-40-58.bigpipeinc.com
64.141.40.73	PTR	mail.mpe.ca
64.141.40.74	PTR	h64-141-40-74.bigpipeinc.com
64.141.40.75	PTR	h64-141-40-75.bigpipeinc.com
64.141.40.98	PTR	h64-141-40-98.bigpipeinc.com
64.141.40.106	PTR	h64-141-40-106.bigpipeinc.com
64.141.40.113	PTR	h64-141-40-113.bigpipeinc.com
64.141.40.121	PTR	h64-141-40-121.bigpipeinc.com
64.141.40.121	A	*.calgaryfiretraining.com
64.141.40.121	A	calgaryfiretraining.info
64.141.40.122	PTR	h64-141-40-122.bigpipeinc.com
64.141.40.123	PTR	h64-141-40-123.bigpipeinc.com
64.141.40.145	PTR	mail.noisesolutions.com
64.141.40.145	A	firecal.noisesolutions.ssi-domain.com
64.141.40.146	PTR	h64-141-40-146.bigpipeinc.com
64.141.40.146	A	ns.calgaryfoundation.org
64.141.40.153	PTR	h64-141-40-153.bigpipeinc.com
64.141.40.178	PTR	server1.circlecvi.com
64.141.40.178	A	westhoff.ab.ca
64.141.40.178	A	report42.com
64.141.40.180	A	server2.circlecvi.com
64.141.40.185	PTR	h64-141-40-185.bigpipeinc.com
64.141.40.200	PTR	h64-141-40-200.bigpipeinc.com
64.141.40.217	PTR	h64-141-40-217.bigpipeinc.com
64.141.40.235	PTR	h64-141-40-235.bigpipeinc.com
64.141.40.235	A	mailsec.carma.ca
64.141.40.242	PTR	h64-141-40-242.bigpipeinc.com
64.141.40.248	PTR	h64-141-40-248.bigpipeinc.com
64.141.41.1	PTR	h64-141-41-1.bigpipeinc.com
64.141.41.3	PTR	h64-141-41-3.bigpipeinc.com
64.141.41.9	PTR	h64-141-41-9.bigpipeinc.com
64.141.41.9	A	ns1.imagineedocsolutions.com
64.141.41.9	A	imagineedocsolutions.com
64.141.41.10	PTR	h64-141-41-10.bigpipeinc.com
64.141.41.10	A	mail.imagineedoc.com
64.141.41.12	A	imagineedoc.com
64.141.41.17	PTR	h64-141-41-17.bigpipeinc.com
64.141.41.25	PTR	h64-141-41-25.bigpipeinc.com
64.141.41.35	PTR	h64-141-41-35.bigpipeinc.com
64.141.41.35	A	www.glencoegolf.org
64.141.41.35	A	glencoegolf.org
64.141.41.40	PTR	h64-141-41-40.bigpipeinc.com
64.141.41.42	PTR	h64-141-41-42.bigpipeinc.com
64.141.41.51	PTR	h64-141-41-51.bigpipeinc.com
64.141.41.59	PTR	h64-141-41-59.bigpipeinc.com
64.141.41.65	PTR	h64-141-41-65.bigpipeinc.com
64.141.41.66	PTR	www.mainland.ca
64.141.41.67	PTR	cgyvmsec01.mainland.ca
64.141.41.72	PTR	h64-141-41-72.bigpipeinc.com
64.141.41.72	A	ns2.progressenergy.com
64.141.41.75	PTR	h64-141-41-75.bigpipeinc.com
64.141.41.75	A	lessenergyuse.com
64.141.41.82	PTR	h64-141-41-82.bigpipeinc.com
64.141.41.96	PTR	h64-141-41-96.bigpipeinc.com
64.141.41.123	PTR	h64-141-41-123.bigpipeinc.com
64.141.41.129	PTR	h64-141-41-129.bigpipeinc.com
64.141.41.130	PTR	h64-141-41-130.bigpipeinc.com
64.141.41.169	PTR	h64-141-41-169.bigpipeinc.com
64.141.41.171	PTR	h64-141-41-171.bigpipeinc.com
64.141.41.176	PTR	h64-141-41-176.bigpipeinc.com
64.141.41.193	PTR	h64-141-41-193.bigpipeinc.com
64.141.41.200	PTR	h64-141-41-200.bigpipeinc.com
64.141.41.218	PTR	h64-141-41-218.bigpipeinc.com
64.141.41.232	PTR	h64-141-41-232.bigpipeinc.com
64.141.42.2	PTR	h64-141-42-2.bigpipeinc.com
64.141.42.8	PTR	h64-141-42-8.bigpipeinc.com
64.141.42.9	PTR	h64-141-42-9.bigpipeinc.com
64.141.42.35	PTR	h64-141-42-35.bigpipeinc.com
64.141.42.50	PTR	h64-141-42-50.bigpipeinc.com
64.141.42.138	PTR	h64-141-42-138.bigpipeinc.com
64.141.42.146	PTR	h64-141-42-146.bigpipeinc.com
64.141.42.169	PTR	h64-141-42-169.bigpipeinc.com
64.141.42.202	PTR	h64-141-42-202.bigpipeinc.com
64.141.42.218	PTR	h64-141-42-218.bigpipeinc.com
64.141.42.218	A	ispnetwork.ca
64.141.42.242	PTR	h64-141-42-242.bigpipeinc.com
64.141.43.5	A	meet.huskyenergy.com
64.141.43.5	A	lyncdiscover.huskyenergy.com
64.141.43.5	A	lyncwebext2.huskyenergy.com
64.141.43.8	PTR	h64-141-43-8.bigpipeinc.com
64.141.43.8	A	lightoilmarketing.fqdn.huskyenergy.com
64.141.43.8	A	lightoilmarketing.huskyenergy.com
64.141.43.9	PTR	h64-141-43-9.bigpipeinc.com
64.141.43.9	A	ftp.huskyenergy.ca
64.141.43.9	A	ftp.huskyenergy.com
64.141.43.11	PTR	h64-141-43-11.bigpipeinc.com
64.141.43.34	PTR	ns1.data-shapers.com
64.141.43.41	PTR	h64-141-43-41.bigpipeinc.com
64.141.43.41	A	adwebreporting.usbank.com
64.141.43.98	PTR	h64-141-43-98.bigpipeinc.com
64.141.43.101	A	mail.solexthermal.com
64.141.43.122	PTR	resmail.renfreweducation.org
64.141.43.122	A	mail.renfreweducation.org
64.141.43.122	A	mail2.renfreweducation.org
64.141.43.124	A	resmail.renfreweducation.org
64.141.43.125	A	sneezy.renfreweducation.org
64.141.43.130	A+PTR	fsofirewall.hrblock.ca
64.141.43.144	PTR	imap.hrblock.ca
64.141.43.146	PTR	fsomailgw.hrblock.ca
64.141.43.146	A+PTR	mail.hrblock.ca
64.141.43.146	A	autodiscover.hrblock.ca
64.141.43.169	PTR	outlook.hrblock.ca
64.141.43.175	PTR	owa.hrblock.ca
64.141.43.175	PTR	autodiscover.hrblock.ca
64.141.43.175	PTR	hybrid.hrblock.ca
64.141.43.195	PTR	h64-141-43-195.bigpipeinc.com
64.141.43.201	PTR	h64-141-43-201.bigpipeinc.com
64.141.43.201	A	*.rpmsandbox.com
64.141.43.201	A	bugs.rpmsandbox.com
64.141.43.209	PTR	h64-141-43-209.bigpipeinc.com
64.141.43.209	A	ns2.wacl.com
64.141.43.209	A	shawlink2.wacl.com
64.141.43.219	A+PTR	mail2.careymgmt.com
64.141.43.220	A	gtwcal01.wacl.com
64.141.43.232	A	www.technicare.com
64.141.43.250	PTR	h64-141-43-250.bigpipeinc.com
64.141.43.250	A	photoflashdrive.ca
64.141.44.8	A	prd-mf-01.davincitech.ca
64.141.44.16	PTR	h64-141-44-16bigpipeinc.com
64.141.44.16	A	liftexteriors.com
64.141.44.17	A	dumprunner.com
64.141.44.196	A	flexinet.ca
64.141.44.200	A+PTR	filter1.net.flexinet.ca
64.141.44.211	A+PTR	myoffice.ktunaxa.org
64.141.45.8	PTR	h64-141-45-8.bigpipeinc.com
64.141.45.8	A	corysgrooming.com
64.141.45.8	A	hostmaster.dinamikos.com
64.141.45.155	PTR	h64-141-45-155.bigpipeinc.com
64.141.45.155	A	mail.kimberley.ca
64.141.45.187	PTR	h64-141-45-187.bigpipeinc.com
64.141.45.187	A	mikrobi.com
64.141.45.187	A	mikrobi.mikrobi.com
64.141.46.11	PTR	h64-141-46-11.bigpipeinc.com
64.141.47.76	A	ecap.cenera.ca
64.141.47.99	PTR	h64-141-47-99.bigpipeinc.com
64.141.47.99	A	howk.ca
64.141.47.105	PTR	h64-141-47-105.bigpipeinc.com
64.141.47.105	A	kevinpetersen.com