Robtex

Up: 200.52.132.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 200.52.133.0/25
Down right: 200.52.133.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
200.52.133.137	PTR	137.133.52.200.static.redip.inext.net.mx
200.52.133.138	PTR	138.133.52.200.static.redip.inext.net.mx
200.52.133.181	PTR	181.133.52.200.static.redip.topnet.com.mx
200.52.133.186	PTR	186.133.52.200.static.redip.inext.net.mx
200.52.133.187	A	sre.toptel.com.mx
200.52.133.188	PTR	188.133.52.200.static.redip.inext.net.mx
200.52.133.188	A	mail.century21premiumhouse.com
200.52.133.188	A	mail.ccmail.com.mx
200.52.133.197	PTR	internetengine.inext.net.mx
200.52.133.210	A	mail.solicituddeeempleo.com
200.52.133.210	A	mx.proteccionlaboral.org
200.52.133.253	PTR	253.133.52.200.static.redip.inext.net.mx
200.52.133.254	PTR	254.133.52.200.static.redip.inext.net.mx