Amdocs

"It turns out that Israel has had a potential wiretap on every phone in America for years, along with the ability to monitor and record who any person is calling, anywhere in America; information of great value even if one does not listen to the calls themselves. Amdocs, Inc. the company which sub contracts billing and directory services for phone companies around the world, including 90 percent of American phone companies, is owned by Israeli interests. Yet another company, Comverse Infosys, is suspected of having built a "back door" into the equipment permanently installed into the phone system that allows instant eavesdropping by law enforcement agencies on any phone in America. This includes yours..."

http://whatreallyhappened.com/WRHARTICLES/blackmail.html
http://www.amdocs.com/About/Pages/Customer-List.aspx

"Amdocs Limited (NYSE: DOX) is a provider of software and services for billing, customer relationship management (CRM),operations support systems (OSS). Its traditional clients aretelecommunications "Tier-1" and "Tier-2" providers such as AT&T,BT Group, Sprint, T-Mobile, Vodafone, Bell Canada, Telus, Rogers Communications, Telekom Austria, Cellcom, Comcast, DirecTV,Elisa Oyj and O2-Ireland. The company also offers outsourcedcustomer service and data center operations. Headquartered inChesterfield, Missouri, Amdocs has more than 20,000 employees and serves customers in more than fifty countries (the Registered office of the company is in the Island of Guernsey). [4].."

http://en.wikipedia.org/wiki/Amdocs