Hi there guys,
 
Hope you can possibly help. I have a situation where a member using a yahoo email account has located a credit card list and is utilizing it on our website.
The person has used over 200 credit card numbers and many have been successful.
 
I have log's of IP addresses and traced it to the following IP block owner.
 
Instituto Tecnologico y de Estudios Superiores de Monterrey REDMEX-BNETS (NET-148-203-0-0-1) 
                                  148.203.0.0 - 148.250.255.255
Universidad Autonoma De Ciudad Juarez UACJ (NET-148-210-0-0-1) 
                                  148.210.0.0 - 148.210.255.255

Some of the IP addresses are as follows:
148.210.126.238
148.210.126.228
146.210.116.193
 
Doing a traceroute only gave me their ISP's uplink reverse, AT&T. How can I get in touch with this ISP to ensure this person is caught.
 
Kindest Regards
Barry Murphy
Systems Administrator
http://www.cashevolution.com