Robtex

Up: 201.161.8.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 201.161.8.0/25
Down right: 201.161.8.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
201.161.8.30	PTR	dns1.ifai.org.mx
201.161.8.64	PTR	201-161-8-64.internetmax.maxcom.net.mx
201.161.8.65	PTR	201-161-8-65.internetmax.maxcom.net.mx
201.161.8.99	PTR	201-161-8-99.internetmax.maxcom.net.mx
201.161.8.99	A	safmex.com
201.161.8.99	A	www.safmex.com
201.161.8.100	A+PTR	ns3.safmex.com
201.161.8.100	A	mail.safmex.com
201.161.8.100	A	lyavazteca.com
201.161.8.109	A	cbox.astwork.net
201.161.8.115	A+PTR	bolivar.usb.mx
201.161.8.115	A	usb.mx
201.161.8.116	PTR	usb.edu.mx
201.161.8.117	PTR	csb.edu.mx
201.161.8.128	PTR	201-161-8-128.internetmax.maxcom.net.mx
201.161.8.130	PTR	wigo.com.mx
201.161.8.130	A	mail.redcard.com.mx
201.161.8.130	A	medicalcard.com.mx
201.161.8.131	PTR	grupotps.com.mx
201.161.8.162	PTR	servicios.novamedic.com
201.161.8.163	PTR	user.novamedic.com
201.161.8.164	PTR	201-161-8-164.internetmax.maxcom.net.mx
201.161.8.242	PTR	201-161-8-242.internetmax.maxcom.net.mx
201.161.8.244	PTR	correo.linarand.com.mx
201.161.8.244	A	mail.alcancelibre.org
201.161.8.244	A	mail.linarand.com.mx
201.161.8.245	A	zimbra.linarand.com.mx
201.161.8.250	PTR	201-161-8-250.internetmax.maxcom.net.mx
201.161.8.252	PTR	201-161-8-252.internetmax.maxcom.net.mx