Robtex

Up: 200.23.222.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 200.23.222.0/25
Down right: 200.23.222.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
200.23.222.1	A+PTR	niza.umar.mx
200.23.222.16	A+PTR	carey.umar.mx
200.23.222.17	A+PTR	angel.umar.mx
200.23.222.17	A	kiariolitigation.net
200.23.222.17	A	umar.mx
200.23.222.18	PTR	correo.umar.mx
200.23.222.254	A+PTR	dns.umar.mx