Robtex

Up: 64.117.192.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 64.117.200.0/22
Down right: 64.117.204.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
64.117.201.19	PTR	mail.cct-pa.com
64.117.203.53	PTR	webmail.triunfo.com.pa
64.117.206.130	PTR	dosvallespma.com
64.117.207.130	PTR	mail1.assanet.com
64.117.207.130	A	www.assanet.com
64.117.207.130	A	www.assanet.com.ni