Robtex

Up: 65.5.48.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 65.5.48.0/22
Down right: 65.5.52.0/22

IP	Type	Hostname
65.5.48.15	PTR	exchange.corp.fpu-tn.com
65.5.48.15	A	mail.fpu-tn.com
65.5.49.8	PTR	ns4.fpunet.com
65.5.49.22	A	mx1.fpunet.com
65.5.49.24	A+PTR	mail.fpunet.com
65.5.49.25	PTR	www.fpunet.com
65.5.49.25	A	www.fayelectric.com
65.5.50.33	PTR	65.5.50.33.sta.fpunet.com
65.5.50.82	PTR	65.5.50.82.sta.fpunet.com
65.5.53.51	PTR	65.5.53.51.dyn.fpunet.com
65.5.53.170	PTR	65.5.53.170.dyn.fpunet.com
65.5.54.212	A	parametric.org
65.5.55.251	PTR	65.5.55.251.dyn.fpunet.com