Validating network issues in a Comcast AS

Hello, I was wondering if anybody could put me in touch (perhaps they are already listening) with a contact point for Comcast Cable Comm. As part of some research work we are doing, we identified some issues in their network (in particular AS33657) and would love to confirm them. I did email the notification contact, but got some silly automatic response. Thanks a lot! an optimistic academic -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Fabian E. Bustamante, Associate Professor EECS, Northwestern U. Technological Institute L465 2145 Sheridan Road, Evanston, IL 60208 www.aqualab.cs.northwestern.edu