Robtex

Up: 64.140.48.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 64.140.56.0/22
Down right: 64.140.60.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
64.140.56.2	PTR	ultrapetroleum.com
64.140.56.3	PTR	mail.ultrapetroleum.com
64.140.57.130	PTR	cetmail01.cetenv.com
64.140.60.35	A+PTR	iron1.alttech.com
64.140.60.40	A+PTR	lp1.alttech.com
64.140.60.45	A	co2kiis.alttech.com
64.140.60.50	A	estore.alttech.com
64.140.60.51	PTR	support.alttech.com
64.140.60.150	A	mail.heska.com
64.140.60.151	A	registration.heska.com
64.140.60.156	A	heska.com
64.140.60.156	A	allercept.heska.com
64.140.60.156	A	www.ppbyggab.se
64.140.60.157	PTR	allercept.heska.com
64.140.61.167	PTR	www.neo-mfg.com
64.140.62.206	A	pmforward.pulte.com
64.140.62.211	PTR	zix02.pulte.com
64.140.63.113	A	t1-4-1-0-1-21.edge1.denver1.level3.net