Robtex

Up: 64.140.96.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 64.140.96.0/21
Down right: 64.140.104.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
64.140.96.10	PTR	static.user10.64.140.96.dsli.com
64.140.96.10	A	phmail.physiciansforthehand.com
64.140.96.12	PTR	static.user12.64.140.96.dsli.com
64.140.96.12	A	remote.trustechs.com
64.140.96.36	A	mail.aguirre.cc
64.140.96.77	A	opticaltel.com
64.140.96.77	A	www.opticaltel.com
64.140.96.111	A	mailin.usa2net.net
64.140.96.115	A	mail.usa2net.net
64.140.97.19	A	mkrontheroad.com
64.140.98.2	A	buybotsoft.com
64.140.98.36	A	mail.floridaysusa.com
64.140.98.49	PTR	static.user49.64.140.98.dsli.com
64.140.98.64	PTR	static.user64.64.140.98.dsli.com
64.140.98.67	PTR	static.user67.64.140.98.dsli.com
64.140.98.83	PTR	static.user83.64.140.98.dsli.com
64.140.98.128	PTR	static.user128.64.140.98.dsli.com
64.140.98.129	PTR	static.user129.64.140.98.dsli.com
64.140.98.131	PTR	static.user131.64.140.98.dsli.com
64.140.98.146	PTR	static.user146.64.140.98.dsli.com
64.140.98.176	PTR	static.user176.64.140.98.dsli.com
64.140.98.177	PTR	static.user177.64.140.98.dsli.com
64.140.98.194	PTR	static.user194.64.140.98.dsli.com
64.140.98.195	PTR	static.user195.64.140.98.dsli.com
64.140.98.211	PTR	static.user211.64.140.98.dsli.com
64.140.98.225	PTR	static.user225.64.140.98.dsli.com
64.140.98.226	PTR	static.user226.64.140.98.dsli.com
64.140.98.242	PTR	static.user242.64.140.98.dsli.com
64.140.99.36	A	mail.imdc-inc.com
64.140.99.36	A	mail.bcmex.com
64.140.99.36	A	mail.highway-pc.com
64.140.99.51	PTR	static.user51.64.140.99.dsli.com
64.140.99.51	A	mail.charlevilledev.com
64.140.99.164	A	mail.unisa.com
64.140.99.201	A	mail.h-plegal.com
64.140.99.226	A	pescanova.no-ip.info
64.140.100.10	A	owa.revuelta-architecture.com
64.140.100.10	A	mail.revuelta-architecture.com
64.140.100.99	PTR	host-64-140-100-99.reverse.opticaltel.com
64.140.100.99	A	mail.facilityinvestments.com
64.140.100.99	A	mail.nhaconsulting.com
64.140.100.146	A+PTR	mail.polestarpilates.com
64.140.100.178	A	mail.trinitychurch.tv
64.140.100.246	A	bnmr.net
64.140.101.25	A	mail.dons4n.com
64.140.102.52	A	service.med-lab.com
64.140.102.54	A	ftp.med-lab.com
64.140.102.62	A	vpn.med-lab.com
64.140.103.2	A	mail.phdsalonandspa.com
64.140.103.2	A	mail.williambrasmar.com
64.140.103.4	PTR	laborhelp.net
64.140.103.18	PTR	mail.mail2.cc
64.140.103.20	A	chairsets.com
64.140.103.20	A	karyn.org
64.140.103.161	PTR	static.user161.64.140.103.dsli.com
64.140.104.18	PTR	mail.hyp.biz
64.140.104.18	PTR	mail.bluecondos.com
64.140.104.18	PTR	mail.hypdev.com
64.140.104.35	PTR	static.user35.64.140.104.dsli.com
64.140.105.12	PTR	mail.natlcom.com
64.140.105.18	PTR	mail.natlcom.com
64.140.105.19	PTR	mail.natlcom.com
64.140.105.20	PTR	mail.natlcom.com
64.140.105.21	PTR	mail.natlcom.com
64.140.105.114	A	mail.exhcg.com
64.140.105.194	PTR	mail.1stuf.com
64.140.105.194	A	mail.unitedrealtygroup.com
64.140.105.194	A	unitedrealtygroup.com
64.140.105.226	A	platinumfinance.net
64.140.105.226	A	carpayonline.net
64.140.105.227	A	carpayonline.com
64.140.106.3	PTR	laborhelp.net
64.140.108.50	A	remote.delavegamorgade.com
64.140.108.50	A	mail2.delavegamorgade.com
64.140.108.147	A+PTR	mail.rptgfla.com
64.140.108.147	A	rptgfla.com
64.140.108.147	A	mail.arcfla.com
64.140.109.2	A+PTR	mx.lan-support.net
64.140.109.68	A	www.atlascomplete.com