África do Sul
South Africa Telecommunication Regulatory Authority (SATRA)
TelekomSA

Alemanha
ANGA - cable association 
BAPT
Regulierungsbehörde für Telekommunikation und Post (RegTP)
Citykom Münster
Deutsche Telekom
E-Plus
Mannesmann
VIAG Interkom

Arábia Saudita  

Arabsat
EAE - mobile operator
Saudi Telecom Co.

Argentina
Comisión Nacional de Comunicaciones ImpSat Movicom Multicanal
Nahuelsat
Secretaría de Comunicaciones
Telecom Argentina
Telefonica de Argentina
Telintar S.A.
 

Austrália 
Australian Communications Authority(ACA)
Cable & Wireless Optus Communications
Hutchison Telecoms 
Telstra
Telstra MobileNet 
  
Áustria
Connect Austria
Mobilkom Austria
Post&Telekom Austria
Telekom Austria
Telekom-Control
 

Bahrain
Batelco
 

Bielorússia
Beltelecom
Belcel
Ministry of Post and Telecommunications
 

Bélgica
Belgian Institute for Post and Telecommunications (BIPT)
Belgacom
IBPT
 

Bolivia

Comteco

Cosett

Cotas

Entel

Entel móvil

Multivision

Sittel

Telecel
Vidivisión
 
 
Brasil
Agência Nacional de Telecomunicações (ANATEL)

Amazônia Celular

BCP Telecomunicações
Conectel
Embratel

Fittel

Globo Cabo

Ministry of Communications

Mobitel

PowerNet

SkyLink

TELEBRAS

Tele Centro Sul Participaçoes

Telefónica Celular (CRT)

Telemar

Telemensagem

Telemig Celular

Telesp

Telesp Celular
Teletrim

GlobalTelecom

 

Bulgária
BULFON
Committee of Posts and Telecommunications (CPT)
Mobikom

 

Canadá
BCE
BellNexxia
Canadian Radio-television and Telecommunications Commission
Savage Tele.com Corporation
SaskTel
Teleglobe
Telesystem International Wireless (TIW)
Telus
 

Chile
CTC (Chile)
ENTEL
Subtel
Telefónica del Sur
 

China
China Telecom
China Unicom
FarEasTone
Ministry of Information Industry
New T&T
New World Telephone
 

Colômbia
Celcaribe
Colomsat
Comisión de Regulación de Telecomunicaciones
ETB
Telecom Colombia
Teleupar - Valledupar telco
 

Coréia do Sul
DACOM
Korea Telecom
KTFreetel
LG Telecom
Ministry of Information and Communication
SKTelekom

 

Costa Rica
Aresep
BeeperNet
Icetel
 

Croácia
Cronet
HT Croatia
 

Chipre
CYTA - Cyprus Telecommunications Authority
  

Dinamarca
Telestyrelsen - National Telecom Agency Denmark
TeleDanmark   
 

Equador
Andinatel
Etapa
 

El Salvador

Cablevisa

Convergence (Cablevisa)

CTE Antel

Superintendencia General de Electricidad y Telecomunicaciones (SIGET)

Telefónica El Salvador

Telemóvil
Televip
 

 

Emirados Árabes Unidos
Etisalat(Emirates Telecommunications Corp)
Thuraya Satellite Telecommunications Company
 

Eslováquia
Globtel
Ministry of Transport, Posts and Telecommunications
Regulatory Authority
Slovak Telecom
 

Eslovênia
Ministry of Transport and Communications
Telekom Slovenija

 

Espanha
AESDICA
ASTEL - Telecoms association
CMT: Comision del Mercado de las Telecomunicaciones

Airtel
Jazztel Telecom
Retevision
Telefonica de España
 

Estados Unidos
Alltel
AT&T
BellAtlantic
BellSouth International
Call-Net
CenturyTelephone Enterprises

COMSATCorporation

Concentric

Concert
CRL Network Services
e.spire Communications Inc.
FaciliCom International
Federal Communications Commission
Federal TransTel Inc (FTT)  
GE Information Services
Global One       
Globalstar 
GlobalTeleSystems (GTS)  
GTE
Infonet Services Corporation 
Inmarsat   
Intelsat  
Iridium 
IXnet 
Loral Orion       
MCI WorldCom
Nextel Communications, Inc.
PanAmSat Corporation  
PSINet
RogersCommunications
RSL COM  

SBC Communications

Sprint
Teledesic  
USWest
Verio 
WorldPartners/WorldSource
WorldPort Communications

 

Estônia
Eesti Telefon
Estonian Telecom Ltd.
Radiolinja Eesti
Ritabell
 

Filipinas
Globe Telecom
Pilipino Telephone Corp. (PILTEL) 
PLDT- Philippines
Smart Communications

 

Finlândia
FINNET International 
Helsinki Telephone Company 
Helsinki Televisio
OY Radiolinja
Sonera
Tampere Telephone Company
Telecommunications Administration Centre (TAC)
 

França
ART: l'Autorité de Régulation des Télécommunications
Bouygues Télécom
Cegetel
First Telecom France
France Telecom
VIVENDI
 
  

Grécia
Cosmote
National Telecommunications Commission (NTC)
OTE     
Panafon 
STET

 

Guatemala

C-net

Comtech - cable TV

Superintendencia de Telecomunicaciones (SIT)
Telgua
 

Holanda
Dutchtone
Hoofddirectie Telecommunicatie en Post
Enertel
KPN Qwest
Libertel
OPTA: Onafhankelijke Post en Telecommunicatie Autoriteit
Unisource
VECAI

 

Honduras
Comtelca - telecoms association

Comisión Nacional de Telecomunicaciones (Conatel) - telecoms regulator
Hondutel
 

Hong Kong
Cable & Wireless HKT
ChinaTelecom (Hong Kong)
First Pacific
Hongkong Telecom
OFTA: Office of the Telecommunications Authority
Peoples Telephone Co.
SmarTone Communications
 
 

Hungria

Emitel

MATAV Group

Ministry of Transport, Communications and Water Management

Pannon

Westel

 

Iêmen
Teleyemen
 
 

Índia

BPL Mobile

DoT India
Hutchison Max Telecom
Mobilink
MTNL
Telecommunications Regulatory Authority
Usha Martin Telecom
VSNL
 

Indonésia
Deparpostel
PT Satelindo

PT Telkom
PT Telkomsel
 

Irlanda
Eircell
Eircom
ODTR: Office of the Director of Telecommunications Regulation
 

Israel
BEZEQ- Israel Telecoms Corp 
Israel Ministry of Communications
 

Itália
Albacom
Autorità per le Garanzie nelle Comunicazioni
Autostrade Telecomunicazioni
Olivetti
Omnitel 
Telecom Italia
TIM(Telecom Italia Mobile) 
Wind
 

Japão
DDI
IDC
Internet Initiative Japan (IIJ)
JapanTelecom   
KDD
Ministry of Posts and Telecommunications (MPT)

NTT
NTT DoCoMo
PHS MoU Group  
 

Jordânia
Jordan TRC
 

Kuwait
Kuwait MoCommunications
 

Latvia
Lattelekom
The Latvia Telecommunication State Inspection
 

Líbano
Lebanese Ministry of Telecommunication
 

Lituânia
Comliet
Lietuvos Telekomas
 

Malásia
Celcom
Jabatan Telekom Malaysia  
Measat
Ministry of Energy, Telecoms and Post Malaysia
Sapura
Telekom Malaysia
Time Telekom
TRI(Technology Resources Industries)
 

México
Cofetel
Axtel
Avantel
Movitel
Secretaria de Communicaciones y Transportes
TELMEX
 
 

Nova Zelândia
Clear Communications
CNPG - regulator
Telecom New Zealand
 

Nicarágua
Bellsouth - Nicacel

Enitel

Nicacom
Telcor - regulator
 

Noruega
Janco Multicom 
Norwegian Post and Telecommunications Authority (NPT)
Telenor
Telenordia
 

Omã
Omanatel
 

Paquistão
PTA: Pakistan Telecommunication Authority
PTCL(Pak Telecom)
 

Palestina
Paltel
 

Panamá
Bell South

Cable & Wireless Panamá

CWPanamá - Internet
Ente Regulador de los Servicios Públicos
 
Paraguai
Antelco
MOPC
 

Peru
Cable Mágico
FirstCom
Organismo Supervisor de Inversión Privada en Telecomunicaciones(OSIPTEL)
PeruSat
Tele2000 
Telefonica del Peru
 
 

Polônia
Centertel
Ministry of Posts and Telecommunications
Netia
Polkomtel
TelekomunikacjaPolska 
 

Portugal
ICP: Instituto das Comunicações de Portugal
Optimus
Portugal Telecom
Telecel
TMN
 

Porto Rico
PuertoRico Telephone (Company)

Reino Unido
BABT: British Approvals Board for Telecommunications
BT
Cable & Wireless Communications       
Cable and Wireless plc
COLT Telecom
Dolphin Telecom  
Energis

Fibernet
First Telecom UK
KDD Europe
Kingston Communications
NTL
OFTEL
One 2 One
Orange
ScottishTelecom
Swiftcall
Telewest     
The Radiocommunications Agency
Vodafone
 

República Tcheca
Czech Telecommunications Office
SPT Telecom

 

Romênia
National Agency for Communications and Information
RomTelecom
 

Rússia
Rostelecom
Svyazinvest
 

 

Singapura
Mobile 1

SingaporeTelecom
Telecommunication Authority of Singapore (TAS) 

  

Suécia
Comviq

Europolitan

National Posts & Telecommunications Agency (PTS)
NetCom AB
NETnet AB
Tele2
Telenordia
Telia 
 

Suiça
BAKOM - OFCOM
diAx
Sunrise communications
Swisscom
 

Síria
Syrian Telecommunications Establishment
 

Taiwan
Chunghwa Telecom
 

Tailândia
Advanced Info Service (AIS)
Communications Authority of Thailand [CAT]
Digital Phone Company (DPC)
Shin Corporations
Thai Telephone and Telecommunications
TelephoneOrganization of Thailand 
 

Turquia
Ministry of Transports and Communications

Turkcell
TurkTelekom
 

Ucrânia
Ukrtel(Ukrainian Telecom)
Utel
 

Uruguai
Ancel
ANTEL
Dirección General de Comunicaciones (DNC)
  
 

Venezuela
CANTV
Casetel
Comisión nacional de Telecomunicaciones(Conatel)
Movilnet
Telcel
 

Vietnã
VNPT