Robtex

Up: 148.247.22.0/23
Can't show all results, try to descend to a more specific CIDR
Down left: 148.247.22.0/25
Down right: 148.247.22.128/25
(Some of the IP numbers are capped at 3 entries)

IP	Type	Hostname
148.247.22.8	A+PTR	swnl.saltillo.cinvestav.mx
148.247.22.8	A	snwl.cinvestav.edu.mx
148.247.22.14	A+PTR	www.saltillo.cinvestav.mx
148.247.22.14	A	cinvestav.edu.mx
148.247.22.14	A	saltillo.cinvestav.mx
148.247.22.15	PTR	ns1.saltillo.cinvestav.mx
148.247.22.15	A	ns1.cinvestav.edu.mx
148.247.22.17	A+PTR	mail.saltillo.cinvestav.mx
148.247.22.17	A	mail.cinvestav.edu.mx
148.247.22.19	A	ns2.cinvestav.edu.mx