On Sat, Oct 22, 2011 at 12:56 AM, N Rauhauser <neal.rauhauser@gmail.com> wrote:

 I do some protective service work, one client is the head of a Washington D.C. NGO that faced a credible death threat last month. Tonight I received information that the source of this threat traced one of the NGO's volunteers to her home address via Comcast IP, and the location is a relatively short drive away from a man who was arrested last month for criminal harassment almost five hundred miles from his home.

 I have some genuine concerns for the physical safety of this Comcast customer, and I'd like to talk to someone immediately. We've got an annoyed FBI agent who will confirm the back story on this Monday, but the subjects know they're under some sort of investigation and I'm afraid of what might happen if further info leaks over the weekend.

Then your FBI agent should probably go through the channels (http://security.comcast.net/get-help/contact-comcast-security.aspx) they have to speak to Comcast, especially if it involves a threat to life and safety. Asking on NANOG for a Comcast contact to give you customer information (which is what it seems like you're asking for) probably isn't going to help and makes it look more like you're trying to social engineer some information than trying to help someone. Bob