Austria
- Mobilkom Austria AG
- Hutchison Drei Austria GmbH
Belgium
- Telenet Group SPRL
- Orange Belgium nv/sa
- Proximus-- Societe Anonyme de Droit Public (mobile)
Bulgaria
- Mobiltel EAD
- Telenor Bulgaria EAD
Croatia
- Vipnet
Cyprus
- MTN Cyprus
- Cyprus Telecommunications Authority
Czech Republic
- Vodafone Czech Republic-- a.s.
- O2 Czech Republic a.s.
Denmark
- Telia Danmark
- TDC A/S
- Hi3G
Estonia
- Elisa Eesti AS
- Estonia EMT
- Tele2 Eesti AS
Finland
- Telia Carrier Finland Oy
- Elisa Oyj
- Alands Telekommunikation Ab
France
- Societe Francaise du Radiotelephone -SFR sa
French Guiana
- Outremer Telecom
Germany
- Telefonica Germany GmbH & Co. OHG
- Vodafone GmbH
Gibraltar
- Gibtelecom Ltd.
Greece
- Wind Hellas Telecommunications sa
- Vodafone Panafon Telecommunications Comp SA
Hungary
- Vodafone
- Pannon GSM
Iceland
- Siminn hf.
- Syn hf
Ireland
- Hutchison 3G Ireland Ltd
- Vodafone Ireland Ltd.
Italy
- Wind Tre S.p.A.
- Vodafone Italia S.p.A
Latvia
- Latvijas Mobilais Telefons
- SIA Tele2
Liechtenstein
- Mobilkom
Lithuania
- Tele2 UAB
- Telia Lietuva AB
Luxembourg
- Tango SA
- POST Luxembourg
- Orange Communications Luxembourg SA
Malta
- Vodafone Malta Ltd.
- GO MOBILE Communication
Netherlands
- Vodafone Libertel BV
- KPN Mobile BV
Norway
- TeliaSonera Norge AS
Poland
- Polkomtel SP. Z O.O.
- Orange Polska S.A.
Portugal
- Vodafone Portugal-- Comunicacoes Pessoais S.A.
- MEO - Servicos de Comunicacoes e Multimedia-- S.A.
Reunion
- Societe Reunionnaise du Radiote l phone
Romania
- Orange Romania SA
- RCS & RDS S.A.
- Vodafone Romania SA
Slovakia
- O2 Slovakia-- s.r.o.
- Orange Slovensko
Slovenia
- A1 Slovenija d.d.
- Mobitel
Spain
- Xfera Moviles-- S.A
- Vodafone Espana S.A.U.
- Orange Espagne S.A.U.
- Telefonica de Espana S.A.U.
Sweden
- Telia Sonera Mobile Networks AB
- Tele2 Sverige AB XX1149
- Hi3G Access AB
Switzerland
- Sunrise Communications AG
- Salt Mobile SA
United Kingdom
- Hutchison 3G UK Ltd
- Telefonica UK Limited.
- Vodafone Ltd.