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Commonwealth Telecommunications Organisation [REGINTORG] ()
Asociación Iberoamericana de Centros de Investigación y Empresas de Telecomunicaciones
Cellular Operators Association of India (COAI) [OTHER ENTITY] (India (Republic of))
DAISY Consortium [REGINTORG] ()
GSM Association
Huawei Technologies Co. Ltd.
International Electrotechnical Commission [REGINTORG] ()
International Telecommunications Satellite Organization [REGINTORG] ()
ITU-APT Foundation of India [REGINTORG] ()
LS telcom AG [SIO] (Germany (Federal Republic of))
Mobily Company [ROA] (Saudi Arabia (Kingdom of))
MTN Syria [ROA] (Syrian Arab Republic)
National Telecommunication Institute (NTI)
OJSC Intellect-Telecom [SIO] (Russian Federation)
Regional African Satellite Communications Organization [SATORG] (Côte d
Rohde & Schwarz GmbH & Co. KG
Telecommunications Regulatory Authority [ROA] (Lebanon)
Telecom Regulatory Authority of India (TRAI) [OTHER ENTITY] (India (Republic of))
Tunisie Télécom
United Kingdom Telecommunications Academy (UKTA) [REGINTORG] ()
UMTS Forum [REGINTORG] (International (no specific country))
West Africa Telecommunications Regulators Assembly [REGINTORG] (International (no specific country))
ZTE Corporation [SIO] (China (People
International Telecommunications Users Group [REGINTORG] (International (no specific country))
Telecommunications Authority of Trinidad and Tobago (TATT) [OTHER ENTITY] (Trinidad and Tobago)
Asia-Pacific Telecommunity [REGORG] (International (no specific country))
AfriNIC [REGINTORG] (International (no specific country))
African Telecommunications Union [REGORG] (International (no specific country))
WebForce International Federation [REGINTORG] (International (no specific country))
Intervale [OTHER ENTITY] (Russian Federation)
Aggaros S.L. [OTHER ENTITY] (Spain)
Vihaan Networks Limited (VNL) [SIO] (India (Republic of))
BH Telecom [ROA] (Bosnia and Herzegovina)
Telefónica O2 Czech Republic, a.s.
THALES Communications [SIO] (France)
Arab Information and Communication Technology Organization (AICTO) [REGINTORG] (International (no specific country))
Coordination Center for TLD.RU [OTHER ENTITY] (Russian Federation)
SES WORLD SKIES (Netherlands)
Eastern Caribbean Telecommunications Authority
True Corporation Public Company Limited [ROA] (Thailand)
Digital Radio Mondiale [REGINTORG] (International (no specific country))
Telenor ASA [ROA] (Norway)
Thuraya Telecommunications Company [ROA] (United Arab Emirates)
Caribbean Association of National Telecommunication Organizations [REGORG] (International (no specific country))
International Federation for Information Processing [REGINTORG] (International (no specific country))
SAMENA Telecommunications Council [REGINTORG] (International (no specific country))
RailTel Corporation of India Ltd. [ROA] (India (Republic of))
Atlantique Télécom Côte d
Organismo Supervisor de Inversión Privada en Telecomunicaciones (OSIPTEL) [OTHER ENTITY] (Peru)
ArmenTel CJSC (Armenia Telephone Company) [ROA] (Armenia (Republic of))
Dominic Foundation [REGINTORG] (International (no specific country))
MTN Nigeria Communications Limited [ROA] (Nigeria (Federal Republic of))
European Telecommunications Standards Institute [REGORG] (International (no specific country))
Türk Telekom Group (Turkey)
Kyrgyztelecom OJSC [ROA] (Kyrgyz Republic)
ICOSNET SPA [ROA] (Algeria (People
International Amateur Radio Union
Alcatel-Lucent France [SIO] (France)
Instituto Costarricense de Electricidad (ICE) [ROA] (Costa Rica)
Alcatel-Lucent USA Inc. [SIO] (United States of America)
Al-Iktissad Wal-Aamal Group [OTHER ENTITY] (Lebanon)
Teléfonos de México S.A.B. de C.V.
KDDI Corporation [ROA] (Japan)
MEASAT Satellite Systems Sdn. Bhd. [ROA] (Malaysia)
Saudi Telecom [ROA] (Saudi Arabia (Kingdom of))
Odessa National Academy of Telecommunications n.a. A.S. Popov
Institute of Electronics and Telecommunications under Kyrgyz (Kyrgyzstan)
Nokia Solutions and Networks Gmbh & Co. KG (Germany)
Asia-Pacific Broadcasting Union [REGINTORG] (International (no specific country))
China Telecommunications Corporation [ROA] (China (People
Orascom Telecom Bangladesh Limited (Banglalink) [ROA] (Bangladesh (People
Grameenphone (GP) Limited [ROA] (Bangladesh (People
Telekom Brunei Berhad (TelBru) [ROA] (Brunei Darussalam)
Robi Axiata Limited (Bangladesh)
Global VSAT Forum [REGINTORG] (International (no specific country))
Bharat Sanchar Nigam Ltd. (BSNL) [ROA] (India (Republic of))
Arab Private Broadcasting Union [REGINTORG] (International (no specific country))
Portugal Telecom, SGPS, S.A. [ROA] (Portugal)
International Union of Radio Science [REGINTORG] (International (no specific country))
JSC Kazakhtelecom [ROA] (Kazakhstan (Republic of))
Symantec Corporation [SIO] (United States of America)
Secretariat of the Pacific Community [REGINTORG] (Fiji (Republic of))
GEW Technologies (Pty) Ltd. (South Africa)
AT&T, Inc. [ROA] (United States of America)
African Ict Consumers Network (AICN)
PMIConseil (France)
Multinet Pakistan (PVT) Limited (Pakistan)
Navajo Nation Telecommunication Regulatory Commission (United States)
BlackBerry Limited (Canada)
General Satellite Corporation (Russian Federation)
Associação de Reguladores de Comunicações e Telecomunicações da Comunidade dos Países de Língua Portuguesa (ARCTEL-CPLP)
Telecom Egypt Data S.A.E.  (TE Data)
O3b Networks Limited
Nepal Telecom (Nepal Doorsanchar Company Limited)
The Abdus Salam International Centre for Theoretical Physics
Irancell Telecommunication Services Company
World Association of Community Radio Broadcasters
m:tel (Bosnia and Herzegovina)
Afghan Wireless Communication Company
Agence Tunisienne d
Cable & Wireless Panamá S.A.
Bahrain Telecommunications Company (Batelco)
Emirates Integrated Telecommunications Company PJSC
Arab Business Forum for Information and Communication Techno (International)
Autorité de Régulation de la Poste et des Télécommunications (ARPT)
Canar Telecommunications Corporation Limited (Canartel)
Jordan Telecom Group
Wataniya Palestine Mobile Telecommunication Company
Vodafone Egypt Telecommunications S.A.E.
Syriatel Mobile Telecom SA
SabaFon
Public Telecom Corporation (PTC)
Centre for Environment and Development for the Arab Region and Europe
League of Arab States
Mobile Interim Company 2
Maroc Télécom - Itissalat Al-Maghrib (IAM)
Ooredoo (Qatar)
Mtc Atheer Telecom Iraq Limited (Zain)
Etihad Atheeb Telecom (EATC)
Oman Telecommunications Company (Omantel)
Palestine Telecommunication Company (Paltel Group)
MTN Sudan
Emirates Telecommunication Corporation - Etisalat
Arab Academy for Science, Technology and Maritime Transport
Centre d
Telecom Egypt
Oman Telecommunications Regulatory Authority (TRA)
Orascom Telecom Tunisie (Tunisiana)
Cooperation Council for the Arab States of the Gulf
Algérie Télécom SPA
Arab States Broadcasting Union
Centre d
Arab Regulators Network
Sudanese Mobile Telephone Company, Zain
Zain Bahrain
Zain Saudi Arabia
Association of Andean Community Telecommunications Enterprises
Cámara Nacional de la Industria de Telecomunicaciones por Cable (CANITEC)
Caribbean Broadcasting Union
Compañía Anónima Nacional Teléfonos de Venezuela (CANTV)
American Registry for Internet Numbers (ARIN)
Compañía Dominicana de Teléfonos, C. por A. (CODETEL)
Compañía Paraguaya de Comunicaciones (COPACO S.A.)
Empresa Argentina de Soluciones Satelitales  (AR-SAT S.A.)
Empresa de Telecomunicaciones de Bogotá S.A. ESP
Empresa de Telecomunicaciones de Cuba  (ETECSA)
Digicel (Jamaica) Limited
Guyana Telephone and Telegraph Co. Ltd.
Telecommunication Industry Association (TIA)
Telefónica del Perú S.A.A.
Fundação Instituto Nacional de Telecomunicações - FINATEL
Caribbean Telecommunications Union
Corporation for National Research Initiatives
Telefónica de Argentina S.A. (TASA)
Telecomunicaciones de México (TELECOMM)
Cisco Systems, Inc.
Inter-American Telecommunication Commission
Verizon Communication Corporation
Microsoft Corporation
Unidad Ejecutora 002 INICTEL - UNI
Intel Corporation
Telecommunications Management Group, Inc.
Intelsat (United States)
Asia Pacific Network Information Centre
Iridium Communications Inc.
Lockheed Martin Corporation (LMC)
Marcatel Com. S.A. de C.V.
Satélites Mexicanos, S.A. de C.V. (SATMEX)
Telecommunications Regional Technical Commission
Radiográfica Costarricense S.A. (RACSA)
Qualcomm, Inc.
Advanced Info Service Public Company Limited
Asia-Pacific Institute for Broadcasting Development
Axiata Group Berhad
Bharti Airtel Limited
China Unicom
CHUAN WEI (Cambodia) Co., Ltd.
Communications Regulatory Commission of Mongolia
Fujitsu Limited
Green Packet Berhad
Hitachi, Ltd.
Korea Information Society Development Institute (KISDI)
KT Corporation
Maxis Mobile Sdn Bhd.
MobiCom Corporation
National Information Society Agency (NIA)
National Institute of Information and Communications Technology (NICT)
NEC Corporation
Nepal Telecommunications Authority (NTA) (Nepal (Republic of))
Nippon Telegraph and Telephone East Corporation (NTT East)
Nippon Telegraph and Telephone West Corporation (NTT West)
Pakistan Mobile Communications Limited (PMCL)
Total Access Communication PLC
PT. INDOSAT Tbk.
PT. Telekomunikasi Indonesia Tbk (TELKOM)
Viettel Corporation
SK Telecom
Telecommunication Company of Iran (TCI)
Tokai University
The ITU Association of Japan
Telekom Malaysia Berhad
Sri Lanka Telecom Ltd.
Telecom Disputes Settlement & Appellate Tribunal (TDSAT)
Nomura Research Institute Ltd.
Samsung SDS Co., Ltd.
Smart Communications, Inc.(SCI)
African Civil Society for the Information Society (ACSIS)
African Union
African Union of Broadcasting
Safaricom Limited
Econet Wireless (PVT) Ltd.
Mascom Wireless Botswana (Pty) Ltd.
Mobile Telephone Networks (Pty) Ltd. (MTN)
Sentech Ltd.
Vodacom Tanzania Limited
Société Nationale des Télécommunications du Sénégal (SONATEL)
Vodacom SA (Pty) Limited
Southern African Development Community
Telkom SA Ltd.
Société des Télécommunications du Tchad (SOTEL TCHAD)
Office National des Télécommunications (ONATEL)
TelOne (Pvt) Limited
Eritrea Telecommunication Services Corporation (EriTel)
East African Community
U-COM Burundi
TOGO TELECOM
Airtel (Zambia)
A1 Telekom Austria AG
Boeing UK Ltd.
Emisiona Tehnika i Veze (ETV)
European Broadcasting Union
Asociación de Reguladores Administrador del Foro Latinoamericano de Entes Reguladores de Telecomunicaciones
Associação Empresarial de Comunicações de Portugal
Central Science Research Telecommunication Institute (ZNIIS)
European Communications Office
European Competitive Telecommunications Association
European Conference of Postal and Telecommunications Administrations
European Telecommunications Network Operators
European Telecommunications Satellite Organisation
Eutelsat S.A.
Orange (France)
European Union
HT d.o.o. Mostar
Inmarsat Ltd.
Joint Stock Telecommunications Company
Koc.net Telecommunications Services Inc.
LET
Makedonski Telekom AD - Skopje (The Former Yugoslav Rep. of Macedonia)
Office des Postes et Télécommunications de Polynésie française (OPT)
R&D Media Sarl
Swisscom SA
Telefónica, S.A.
Réseaux IP Européens Network Coordination Centre (RIPE NCC)
Telecom Italia S.p.A.
Telefon AB - LM Ericsson
United Telecommunication Services (UTS)
WiseKey S.A.
Vodafone Group Services Ltd. (United Kingdom)
Sudan Telecom Company Ltd. (Sudatel) (Sudan)
Moscow Technical University of Communication and Informatics (MTUCI)
Africell Ltd.
Airtel Networks Kenya Ltd. (Kenya)
Mattel (Mauritania)
G3ict - Global Initiative for Inclusive Information and Communication Technologies
telecentre.org Foundation
e Worldwide Group
Southern Africa Telecentre Networks
Regional Commonwealth in the Field of Communications (International)
National Telecommunication Corporation (Pakistan)
JSC
JSC
Internet Society (International)
Internet Systems Consortium (International)
International Organization for Standardization (International)
International Committee of the Red-Cross (International)
International Air Transport Association (International)
Institute of Electrical and Electronics Engineers, Inc. (International)
Indigenous Peoples ICT Task Force
Economic Community for West African States (International)
Forum of Incident Response and Security Teams (FIRST)
Econet Telecom Lesotho (Pty) Ltd (ETL) (Lesotho)
Universiti Sains Malaysia (Malaysia)
The Open University of Tanzania
Tashkent University of Information Technologies
Kigali Institute of Science and Technology (KIST)
International Telecommunication Academy
Instituto Politécnico nacional (IPN) (Mexico)
Ghana Institute of Management and Public Administration (GIMPA)
Czech Technical University in Prague, Faculty of Electrical Engineering
Azerbaijan Technical University
Sintesio Foundation
Integrated Telecom Company
The Bonch-Bruevich Saint-Petersburg State University of Telecommunications
Fibre to the Home Council Middle East & North Africa (FTTH MENA)
Continua Health Alliance
Groupe Défis & Stratégies
Digital Opportunity Trust (International)
LINK Centre, University of Witwatersrand
Avanti Communications Group Plc (United Kingdom)
AVEA ILETISIM HIZMETLERI A.S. (Turkey)
Cable Bahamas Limited (Bahamas)
ConceroConnect, L3C (United States)
ABI Research (United States)
Universidad de las Ciencias Informaticas (UCI) (Cuba)
The Cyber Guardian Pty Ltd (Australia)
Telekom Networks Malawi Limited (Malawi)
Office des Postes et Télécommunications de Nouvelle-Calédoni (France)
Amalgamated Telecom Holdings Limited (ATH) (Fiji)
The Egyptian Company for Mobile Services (MOBINIL) (Egypt)
Open Geospatial Consortium (OGC) (United States)
ARM Holdings (United Kingdom)
CJSC Alfa Telecom (Kyrgyzstan)
Consortium d
Gulf Bridge International (Qatar)
NetHope Inc (International)
IJMA3-The Arab ICT Organization (International)
Tata Communications Ltd (India)
Kaspersky Lab UK Limited (United Kingdom)
The People
East African Communications Organization (International)
IMTS (France)
International Center for Promotion of Enterprises (International)
International Information Systems Security Certification Consortium, Inc. (United States)
AKHET Consulting FZ LLE (United Arab Emirates)
Jordan Mobile Telecommunications Services - Zain Jordan (Jordan)
Ncell Pvt. Ltd. (Nepal (Republic of))
Chinguitel SA (Mauritania)
Quantum Group International Inc. (United States)
IRPO ACISO (Russian Federation)
Gorilla Corporation (Kenya)
América Móvil, S.A.B. de C.V. (Mexico)
Iranian Net Communication & Electronic Services Co. (Iran (Islamic Republic of))
VALSCH Consulting (Côte d
University Utara Malaysia (Malaysia)
Centre for Internet and Society (India)
Mitsubishi Electric Corporation (Japan)
Syrian Telecom (ST) (Syrian Arab Republic)
Teralight, FZ LLC (United Arab Emirates)
Consumers International (International)
Child Helpline International (International)
FTTH Council Asia-Pacific (International)
African Advanced Level Telecommunications Institute (Kenya)
Ecole Supérieure Multinationale des Télécommunications (International)
Commonwealth ITU Group (International)
Global Knowledge Partnership Foundation (International)
Union Economique et Monétaire Ouest Africaine (International)
TTNET (Turkey)
Guinea Ecuatorial de Telecomunicaciones, Sociedad Anonima (Equatorial Guinea)
Altel Communications Sdn Bhd (Malaysia)
Hewlett-Packard International SA (Switzerland)
Pacific Islands Telecommunications Association (International)
Ukrainian National Information Systems (Ukraine)
SGS Société Générale de Surveillance SA (Switzerland)
Telecom Centres of Excellence (TCOE) India (India)
Awal Telecommunications Corporation Ltd. (Papua New Guinea)
OGERO (Lebanon)
Bill & Melinda Gates Foundation (United States)
CMPak Limited (Pakistan)
Telenor Pakistan (Pvt) Ltd. (Pakistan)

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AT&T, Inc.

AT&T Inc. (stylized as at&t) is an American multinational telecommunications corporation, headquartered at Whitacre Tower in downtown Dallas, Texas. AT&T is the largest provider both of mobile telephony and of fixed telephony in the United States, and also provides broadband subscription television services. AT&T is the third-largest company in Texas (the largest non-oil company, behind only ExxonMobil and ConocoPhillips, and also the largest Dallas company). As of May 2013, AT&T is the 21st largest company in the world by market value, and the 13th largest non-oil company. As of 2013[update], it is also the 21st largest mobile telecom operator in the world, with over 107.9 million mobile customers.

The current iteration of AT&T Inc. began its existence as Southwestern Bell Corporation, one of seven Regional Bell Operating Companies created in 1983 in the divestiture of parent company American Telephone and Telegraph Company (founded 1885, later AT&T Corp.) due to the United States v. AT&T antitrust lawsuit. Southwestern Bell changed its name to SBC Communications Inc. in 1995. In 2005, SBC purchased former parent AT&T Corp. and took on its branding, with the merged entity naming itself AT&T Inc. and using the iconic AT&T Corp. logo and stock-trading symbol.

The current AT&T reconstitutes much of the former Bell System and includes ten of the original 22 Bell Operating Companies, along with one it partially owned (Southern New England Telephone), and the original long distance division.

CategoryService Providers
Based inUnited States of America
DomainsMobile ; Fixed ; Broadband ; Internet ; TV
ITU Global DirectoryAT&T, Inc.
Websitehttp://www.att.com
RSShttp://att.centralcast.net/rss/
CEO
Mr Randall L Stephenson

Mr. Randall L. Stephenson has been the Chief Executive Officer of AT&T, Inc. (Formerly, SBC Communications, Inc.) since May 9, 2007 and as its President since June 2007. Mr. Stephenson has background in Telecommunications. He served as the Chief Financial Officer of SBC Communications Inc., Pension Arm. He served as the Chief Operating Officer of AT&T from April 30, 2004 to May 9, 2007, Chief Financial Officer and Senior Executive Vice President from August 2001 to May 2004 and also served as its Principal Accounting Officer. He served as Senior Executive Vice President and Chief Financial Officer of SBC Communications Inc. (SBC), the Manager of AT&T Mobility LLC from August 2001 to April 2004. He joined Southwestern Bell Telephone Company in 1982 in the Information Technology Organization in Oklahoma City. Since 1986, he served as an Area Manager of Corporate Taxes. He served as District Manager of Financial Analysis since 1991. He served as Director of Finance at SBC International, Inc. in Mexico City and was responsible for Financial Oversight of SBC's Mexico properties, including Teléfonos de México (Telmex). From 1996 to October 1999, he served as Controller for SBC Communications Inc. in San Antonio, and served as Vice President and Controller for SBC the following year. He also served as Senior Vice President of Finance with responsibility for all Financial Matters from October 1999 to September 2000 of SBC's Telephone Company Operations, which included Ameritech, Pacific Bell, Nevada Bell and Southwestern Bell. Additionally, he served as a Senior Vice President of Consumer Marketing, where he was responsible for all Product Development, Marketing, Pricing and Tariffs, and Sales Support for SBCs Residential Customers and as Senior Vice President of Performance Assurance until October 2000, where he was responsible for monitoring and assuring the performance of the realigned SBC. He started his career at Southwestern Bell Telephone Company in 1982 and has extensive experience in Finance and Operations. Mr. Stephenson has been the Chairman of AT&T, Inc. since June 3, 2007. He served as the Chairman of Cingular Wireless Corporation, a Manager of AT&T Mobility LLC from February 2003 to June 2004. He has been a Director of AT&T, Inc. since June 1, 2005, Emerson Electric Co. since June 1, 2006. He serves as Director of AT&T Mobility LLC. He served as a Director of Cingular Wireless Corporation from July 2001 to 2006 and Prodigy Communications Corp. since 2001. He serves on the San Antonio United Way Executive Committee. He did his Certified Public Accountant. Mr. Stephenson holds a Bachelor of Science degree in Accounting from Central State University in Edmond, Okla., and a Master of Accountancy degree from the University of Oklahoma at Norman.