Robtex

Up: 201.121.192.0/18
Can't show all results, try to descend to a more specific CIDR
Down left: 201.121.224.0/20
Down right: 201.121.240.0/20

IP	Type	Hostname
201.121.226.2	PTR	dsl-201-121-226-2-dyn.prod-infinitum.com.mx
201.121.226.97	PTR	dsl-201-121-226-97-dyn.prod-infinitum.com.mx
201.121.240.66	PTR	dsl-201-121-240-66-dyn.prod-infinitum.com.mx
201.121.240.193	PTR	dsl-201-121-240-193-dyn.prod-infinitum.com.mx
201.121.240.226	PTR	dsl-201-121-240-226-dyn.prod-infinitum.com.mx
201.121.253.65	PTR	dsl-201-121-253-65-dyn.prod-infinitum.com.mx
201.121.253.96	PTR	dsl-201-121-253-96-dyn.prod-infinitum.com.mx
201.121.253.128	PTR	dsl-201-121-253-128-dyn.prod-infinitum.com.mx
201.121.253.163	PTR	dsl-201-121-253-163-dyn.prod-infinitum.com.mx
201.121.253.193	PTR	dsl-201-121-253-193-dyn.prod-infinitum.com.mx