Robtex

Up: 201.140.4.0/22
Can't show all results, try to descend to a more specific CIDR
Down left: 201.140.4.0/24
Down right: 201.140.5.0/24
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
201.140.5.51	PTR	dedint-201-140-5-51.salcoah.static.axtel.net
201.140.5.51	A	nexxus.com.mx
201.140.5.51	A	nxsrv.nexxus.com.mx
201.140.5.52	PTR	mail.nexxus.com.mx
201.140.5.52	A	nexxus.com.mx
201.140.5.52	A	mail.pabellonm.com.mx