Robtex

Up: 64.16.0.0/17
Can't show all results, try to descend to a more specific CIDR
Down left: 64.16.0.0/19
Down right: 64.16.32.0/19
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
64.16.0.0	PTR	network-64-16-0.mtntel.net
64.16.1.193	PTR	ip-64-16-1-193.biz.sta.mtntel.net
64.16.2.0	PTR	network-64-16-2.mtntel.net
64.16.2.1	PTR	ip-64-16-2-1.biz.sta.mtntel.net
64.16.5.0	PTR	network-64-16-5.mtntel.net
64.16.5.11	A	frodo.co-ophosting.com
64.16.5.11	A	amarock.com
64.16.5.11	A	tristatewholesale.com
64.16.5.64	PTR	ip-64-16-5-64.biz.sta.mtntel.net
64.16.5.131	PTR	ip-64-16-5-131.biz.sta.mtntel.net
64.16.5.194	PTR	ip-64-16-5-194.biz.sta.mtntel.net
64.16.7.187	A	mail.gblaw.com
64.16.10.74	A	mail2.dbcarchitectbuilder.com
64.16.10.123	A	keyconnection.com
64.16.10.125	A	theallproman.com
64.16.10.125	A	calltheallproman.com
64.16.11.65	PTR	ip-64-16-11-65.biz.sta.mtntel.net
64.16.11.101	A	webtrac.imortgage.com
64.16.11.105	A	doctrac.imortgage.com
64.16.11.106	A	autodiscover.imortgage.com
64.16.11.106	A	mail.imortgagesucks.net
64.16.11.128	PTR	ip-64-16-11-128.biz.sta.mtntel.net
64.16.11.162	A	azmoves.net
64.16.11.162	A	azmarkettrends.com
64.16.11.195	PTR	ip-64-16-11-195.biz.sta.mtntel.net
64.16.11.235	A	tlsventures.com
64.16.12.98	A	vpn.iconcreativestudio.com
64.16.12.148	A	mail.j-com.com
64.16.12.148	A	ns1.j-com.com
64.16.12.149	A	top5bikedeals.com
64.16.12.150	A	klinikai.com
64.16.12.234	A	selfstoragealarms.com
64.16.12.234	A	securitywithoutlimits.com
64.16.12.234	A	storlogix.com
64.16.13.112	A	training.maei.ca
64.16.13.195	PTR	ip-64-16-13-195.biz.sta.mtntel.net
64.16.13.196	A	ess.dg.ca
64.16.13.199	A	dgsi.ca
64.16.13.199	A	en.dg.ca
64.16.14.1	PTR	ip-64-16-14-1.biz.sta.mtntel.net
64.16.14.3	PTR	ip-64-16-14-3.biz.sta.mtntel.net
64.16.14.64	PTR	ip-64-16-14-64.biz.sta.mtntel.net
64.16.14.65	PTR	ip-64-16-14-65.biz.sta.mtntel.net
64.16.14.130	PTR	ip-64-16-14-130.biz.sta.mtntel.net
64.16.14.131	PTR	ip-64-16-14-131.biz.sta.mtntel.net
64.16.14.192	PTR	ip-64-16-14-192.biz.sta.mtntel.net
64.16.14.211	A	mail1.dahnyogaonline.com
64.16.14.219	A	mail.saintbarnabas.org
64.16.16.26	A	mail.neiaw.com
64.16.16.151	A	mail.introtel.com
64.16.17.135	A	share.helmsbriscoe.com
64.16.17.137	A	hbmgr.com
64.16.17.151	A	company.helmsbriscoe.com
64.16.17.151	A	intranet.helmsbriscoe.com
64.16.17.196	A	icisolutions.com
64.16.18.20	A	mx1.websan.com
64.16.18.230	PTR	ip-64-16-18-230.biz.sta.mtntel.net
64.16.18.230	A	mail.azmoves.com
64.16.18.231	A	rniarizona.com
64.16.18.231	A	onetouchmarketingsuite.com
64.16.18.231	A	smtp2.azmoves.com
64.16.22.0	PTR	network-64-16-22.mtntel.net
64.16.22.65	PTR	ip-64-16-22-65.biz.sta.mtntel.net
64.16.22.193	PTR	ip-64-16-22-193.biz.sta.mtntel.net
64.16.25.179	A	commportal.alluvioncommunications.com
64.16.25.228	A	mail.triangletruss.com
64.16.26.24	A	mail.rvamerica.net
64.16.26.131	PTR	ip-64-16-26-131.biz.sta.mtntel.net
64.16.26.193	PTR	ip-64-16-26-193.biz.sta.mtntel.net
64.16.27.1	PTR	dns2.websitemanagement.net
64.16.27.5	A	dns.rvamerica.net
64.16.27.5	A	dns2.rvamerica.net
64.16.27.5	A	websitemanagement.net
64.16.28.2	A+PTR	rad0.gilanet.net
64.16.28.22	A	mail1.gilarivertel.com
64.16.28.23	A	mail2.gilarivertel.com
64.16.30.99	A	gilariver.com
64.16.30.99	A	www.gilariver.com
64.16.30.100	A	griidd.com
64.16.30.101	A	pop.gilariver.com
64.16.30.194	PTR	ip-64-16-30-194.biz.sta.mtntel.net
64.16.30.196	A	mail.sacatonschools.org
64.16.33.1	PTR	ip-64-16-33-1.biz.sta.mtntel.net
64.16.33.2	PTR	ip-64-16-33-2.biz.sta.mtntel.net
64.16.33.3	PTR	ip-64-16-33-3.biz.sta.mtntel.net
64.16.33.65	PTR	ip-64-16-33-65.biz.sta.mtntel.net
64.16.33.128	PTR	ip-64-16-33-128.biz.sta.mtntel.net
64.16.33.129	PTR	ip-64-16-33-129.biz.sta.mtntel.net
64.16.33.194	PTR	ip-64-16-33-194.biz.sta.mtntel.net
64.16.34.128	PTR	ip-64-16-34-128.biz.sta.mtntel.net
64.16.34.131	PTR	ip-64-16-34-131.biz.sta.mtntel.net
64.16.34.193	PTR	ip-64-16-34-193.biz.sta.mtntel.net
64.16.34.194	PTR	ip-64-16-34-194.biz.sta.mtntel.net
64.16.35.3	PTR	ip-64-16-35-3.biz.sta.mtntel.net
64.16.36.115	A	mail.awdlaw.com
64.16.37.85	A	mail.greulichs.com
64.16.37.87	A	mail.mmbstudio.com
64.16.38.101	A	barracuda.az-erate.com
64.16.39.64	PTR	ip-64-16-39-64.biz.sta.mtntel.net
64.16.39.65	PTR	ip-64-16-39-65.biz.sta.mtntel.net
64.16.39.66	PTR	ip-64-16-39-66.biz.sta.mtntel.net
64.16.39.67	PTR	ip-64-16-39-67.biz.sta.mtntel.net
64.16.40.44	A	ezproxy.portmoody.ca
64.16.40.67	PTR	ip-64-16-40-67.biz.sta.mtntel.net
64.16.40.194	PTR	ip-64-16-40-194.biz.sta.mtntel.net
64.16.43.48	A	aplusedu.info
64.16.43.48	A	alto.aplusedu.info
64.16.43.48	A	mail.aplusedu.info
64.16.43.57	A	mail.lifetimelearn.info
64.16.45.129	PTR	ip-64-16-45-129.biz.sta.mtntel.net
64.16.45.130	A	62.244.235.66.rev.adoption.com
64.16.45.130	A	235.66.rev.adoption.com
64.16.45.130	A	66.rev.adoption.com
64.16.45.216	A	mail01.grhc.org
64.16.45.217	A	mail02.grhc.org
64.16.49.128	PTR	ip-64-16-49-128.biz.sta.mtntel.net
64.16.49.130	PTR	ip-64-16-49-130.biz.sta.mtntel.net
64.16.49.192	PTR	ip-64-16-49-192.biz.sta.mtntel.net
64.16.50.1	PTR	ip-64-16-50-1.biz.sta.mtntel.net
64.16.50.66	PTR	ip-64-16-50-66.biz.sta.mtntel.net
64.16.50.194	PTR	ip-64-16-50-194.biz.sta.mtntel.net
64.16.51.9	A	meomyo.mobi
64.16.51.187	A	email.firepanelllc.com
64.16.52.131	PTR	ip-64-16-52-131.biz.sta.mtntel.net
64.16.52.131	A	ns.galois.com
64.16.54.0	PTR	network-64-16-54-0.mtntel.net
64.16.54.1	PTR	ip-64-16-54-1.biz.sta.mtntel.net
64.16.54.64	PTR	ip-64-16-54-64.biz.sta.mtntel.net
64.16.54.193	PTR	ip-64-16-54-193.biz.sta.mtntel.net
64.16.54.194	PTR	ip-64-16-54-194.biz.sta.mtntel.net
64.16.55.0	PTR	network-64-16-55-0.mtntel.net
64.16.55.1	A+PTR	access0.phx1.eschelon.com
64.16.55.65	PTR	ip-64-16-55-65.biz.sta.mtntel.net
64.16.55.192	PTR	ip-64-16-55-192.biz.sta.mtntel.net
64.16.55.193	PTR	ip-64-16-55-193.biz.sta.mtntel.net
64.16.56.3	PTR	ip-64-16-56-3.biz.sta.mtntel.net
64.16.57.10	A	www.gric.nsn.us
64.16.57.10	A	gric.nsn.us
64.16.57.11	A	mail2.gric.nsn.us
64.16.57.12	A	mail.gric.nsn.us
64.16.57.67	PTR	ip-64-16-57-67.biz.sta.mtntel.net
64.16.58.3	PTR	ip-64-16-58-3.biz.sta.mtntel.net
64.16.58.65	PTR	ip-64-16-58-65.biz.sta.mtntel.net
64.16.58.194	PTR	ip-64-16-58-194.biz.sta.mtntel.net
64.16.60.60	A	remote.dcktrustee.com
64.16.60.123	A	mail.ptegroup.com
64.16.60.123	A	mail.uspropertywholesalers.com
64.16.60.123	A	mail.azlandwholesalers.com
64.16.61.65	PTR	ip-64-16-61-65.biz.sta.mtntel.net
64.16.61.192	PTR	ip-64-16-61-192.biz.sta.mtntel.net