Robtex

Up: 207.83.192.0/20
Can't show all results, try to descend to a more specific CIDR
Down left: 207.83.200.0/22
Down right: 207.83.204.0/22
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
207.83.200.200	A	dx1.iusacell3g.com.mx
207.83.200.200	A	time.telecosmo.iusacell.com.mx
207.83.200.200	A	ns1.iusacell3g.com
207.83.200.201	A	time.telecosmo.iusacell.com.mx
207.83.200.231	A	ubicacelfamiliar.iusacell3g.com.mx
207.83.200.234	A	ubicacel.iusacell.com.mx
207.83.200.241	A	consumo-datos.att.com.mx
207.83.200.242	A	ubicanet.iusacell.com