| Albania |
ALB telecom, AMC, Eagle Mobile, ONE Telecommunications, Vodafone |
| Andora |
Andorra Telecom, STA Andorra |
| Austria |
A1 Telekom, Hutchinson Drei, Mobilkom, T-Mobile |
| Belarus |
Belarusian Telecommunications, MDC, MTS, JV Mobile Digital, Unitary enterprise A1 |
| Belgium |
Base Belgium, Belgacom Mobile, Orange, Proximus, Telenet |
| Bosnia-Herzegovina |
BH Telecom, HT Mobile, PE Croatian, RS Telecommunication- Mobis |
| Bulgaria |
A1, BTC, Mobiltel, Telenor, Vivacom, Yettel |
| Croatia |
A1, Croatian Telecom, T-Mobile, Tele2, Telemach, VIPnet |
| Cyprus |
Cytamobile – Vodafone, Epic Ltd, PrimeTel |
| Czech Republic |
O2, T-Mobile, Vodafone |
| Denmark |
3 Denmark, Hutchison, Nuuday, TDC Mobil, Telenor, Telia |
| Estonia |
AS EMT, Elisa, Tele2, Telia |
| Faroe Islands |
Faroese Telecom, Hey |
| Finland |
Alands Telekommunikation, DNA Finnet Networks, Elisa, TeliaSonera |
| France |
Bouygues Telecom, Free Mobile, Orange, SFR |
| Germany |
E-Plus Mobilfunk- Telefonica, O2, T-Mobile, Telekom Deutschland, Vodafone |
| Gibraltar |
Gibraltar Telecoms Intl, Gibtelecom |
| Greece |
Cosmote, Nova, Vodafone, Wind Hellas |
| Guernsey |
Jersey Airtel, Sure Guernsey |
| Hungary |
Magyar Telekom, Telenor, TMobile, Vodafone, Yettel |
| Iceland |
Nova, Síminn hf, Vodafone |
| Ireland |
3 Ireland, Eir, Hutchison 3G, Meteor, O2, Vodafone |
| Italy |
3 Italy, Iliad, Telecom, Vodafone, Wind Tre |
| Latvia |
Bite, Latvijas Mobilais Telefons, LMT, Tele2 |
| Liechtenstein |
FL1, Mobilkom, Salt, Swisscom, Telecom, |
| Lithuania |
Bite, Tele2, Telia, UAB |
| Luxembourg |
Orange, P&T, Post, Proximus, Tango |
| Macedonia |
A1, One, T-Mobile, Vip |
| Malta |
Epic Communications, Go Mobile, Melita, Vodafone |
| Moldova |
Orange, Moldcell |
| Montenegro |
One, Crnogorski Telekom, MTel, Telenor |
| Netherlands |
KPN Mobile, T-Mobile, Vodafone |
| Norway |
Telia, Telenor Mobil |
| Poland |
Orange, P4, Play, Plus, Polkomtel, PTK Centertel, T-Mobile, |
| Portugal |
MEO, NOS, Vodafone |
| Romania |
Orange, RCS & RDS, Telekom, Vodafone |
| Russia |
Beeline, MegaFon, Mobile TeleSystems, MTS, PJSC Mobile, T2 Mobile, Tele2, VimpelCom |
| Slovakia |
O2, Orange, T-Mobile, Telefónica |
| Slovenia |
A1, Mobitel, Si. Mobil, Telekom Slovenije, Telemach |
| Spain |
France Telecom, Movistar, Orange, Telefonica, Vodafone, Xfera Móviles, Yoigo |
| Sweden |
COMVIQ, HI3G, Hutchison 3G, Tele2, Telia Mobile |
| Switzerland |
Orange, Salt Mobile, Sunrise, Swisscom |
| Ukraine |
Astelit, Lifecell, Kyivstar, MTS, Trimob |
| United Kingdom |
3 UK, EE, Everything Everywhere, Hutchison 3G, Jersey Telecoms, Manx Telecom, O2, Vodafone |
