Robtex

Up: 64.42.0.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 64.42.0.0/21
Down right: 64.42.8.0/21
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
64.42.0.67	PTR	64-42-0-67.atgi.net
64.42.0.110	A	mickelsen.biz
64.42.1.4	PTR	64-42-1-4.atgi.net
64.42.1.129	PTR	64-42-1-129.atgi.net
64.42.1.147	PTR	64-42-1-147.atgi.net
64.42.1.160	PTR	64-42-1-160.atgi.net
64.42.1.162	A+PTR	smtp.enganon.com
64.42.1.162	A	gnu.enganon.com
64.42.1.162	A	ceravant.com
64.42.1.176	PTR	64-42-1-176.atgi.net
64.42.1.195	PTR	64-42-1-195.atgi.net
64.42.1.209	PTR	64-42-1-209.atgi.net
64.42.1.242	PTR	64-42-1-242.atgi.net
64.42.2.50	A	mail.bellimaging.com
64.42.4.212	A	pavengr.com
64.42.4.213	A	mail.peiconstructionservices.com
64.42.4.213	A	mail.pavengr.com
64.42.7.149	A	border0-se1-0-23-1.sts.eschelon.com
64.42.7.205	A	border0-se3-0-14-4.sts.eschelon.com
64.42.8.3	PTR	spt-proxy.sptca.com
64.42.8.199	A	mail.transworldsystems.com
64.42.9.10	A	grip.atgi.net
64.42.11.21	A	eadvisor.atgi.net
64.42.13.66	PTR	mail.mkmassociates.com
64.42.15.26	A	mail.bat4ph.com
64.42.15.26	A	mail.universalanalyzers.com
64.42.15.50	PTR	64-42-15-50.atgi.net
64.42.15.50	A	smartlegaldocuments.net
64.42.15.50	A	www.csn-reno.net
64.42.15.75	A	mx2.inauguralalbum.com
64.42.15.84	A	nevadakidney.net
64.42.15.85	A	mail.drxlasp.com
64.42.15.138	A	wooter.us
64.42.15.148	A	whitepinecountytreasurer.org
64.42.15.148	A	www.whitepinecountytreasurer.org
64.42.15.170	A	mail1.ims-online.com
64.42.15.170	A	mail.ims-leveragedlearning.com
64.42.15.171	A	mail.ims-online.org
64.42.15.171	A	imsleadership.net
64.42.15.233	A	mail.sourcemillwork.com
64.42.15.233	A	sourcemillwork.com