Telecommunication Provider 5Linx Accessline Communications ACN Communications Services, Inc. AmeriVision Communications, Inc. dba Affinity 4 and Lifeline Communications Airnex Communications, Inc. Allvoi Americatel Corporation ANPI Business, LLC fka Zone Telecom, LLC AT Conference, Inc. AT&T Corp. BA Telecom, Inc. BBG Communications, Inc. Billing Concepts, Inc. (Refered us to AT&T as provider) Birch Telcom of the West Inc. dba Birch Communications BullsEye Telecom Cbeyond Communications LLC Century Link Communications Cincinnati Bell Any Distance Consumer Cellular Convergia Cox California Telecom, LLC Cricket Communications, Inc./AT&T Mobility Earthlink Business, LLC ‐ Earthlink, LLC ‐ Earthlink, Inc. Enhanced Communications Network INC. E. / Everything Wireless First Communications Flash Wireless Globalstar USA LLC Granite Telecommunications LLC GreatCall, Inc. dba Jitterbug IBM Global Network Systems IDT Domestic Telecom inContact, Inc. Intellicall Operator Services Intelafone LLC Intermedia Voice Services I‐Wireless LDMI Telecommunications, Inc. Level 3 Communications LightYear Network Solutions Lingo, Inc Los Angeles SMSA Limited Partnership Matrix Telecom, Inc. Mitel Net Solutions Page 1 of 2 Telecommunication Provider MCI Communications Services, Inc. Mpower Communications Corp. Network Innovations New Cingular Wireless PCS LLC NTT Docomo USA Nextel of California nexVortex, Inc. Nobel Tel, LLC OnStar LLC Ooma, Inc. Opex Communications, Inc. Pacific Bell Telephone Company PAETEC Communications Payment One Corp Phone.com, Inc. Pioneer Telephone PNG Telecommunications, Inc. Primus Telecommunications Ready Wireless SBC Long Distance, LLC Securus Technologies, Inc. Sonic Telecom, LLC Sprint Communications Company, L.P. Sprint Nextel/Spectrum Sprint Telephony PCS, LP Talk America, Inc. Telscape Communications, Inc. TING Globalinx Enterprise, Inc. fka Tri‐M Communications, Inc. T‐Mobile West LLC Metro PCS California, LLC Total Call International, Inc. Total Holdings, Inc. TracPhone Wireless TWC Digital Phone LLC U.S. TelePacific Corp. dba TelePacific Communicaitons UVNV INC Verizon California Inc. Verizon Enterprise Solutions, LLC Verizon Long Distance, LLC Verizon Select Services VoIPStreet Inc. dba VolP Innovations Vonage America Wholesale Carrier Services, Inc. Working Assets Funding Service XO Communications Services, LLC Page 2 of 2.