Robtex

Up: 66.233.32.0/19
Can't show all results, try to descend to a more specific CIDR
Down left: 66.233.48.0/21
Down right: 66.233.56.0/21

IP	Type	Hostname
66.233.50.48	PTR	66-233-50-48.mia.clearwire-wmx.net
66.233.50.48	A	mcrsys.net
66.233.51.88	A	mail.eastside.cc
66.233.55.19	PTR	66-233-55-19.mia.clearwire-wmx.net
66.233.55.145	PTR	66-233-55-145.mia.clearwire-wmx.net
66.233.55.167	A	66-233-55-167.bel.clearwire-dns.net
66.233.57.18	PTR	66-233-57-18.mia.clearwire-wmx.net
66.233.63.96	PTR	66-233-63-96.mia.clearwire-wmx.net