- A1 Telekom Austria
- American Express
- Bite (Italy)
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- Bouygues
- Elisa
- Elisa Oyj
- Free Mobile
- Google Play Balance
- H3G Italia
- Klarna eWallet
- KPN (Koninklijke KPN N.V. Belgium)
- KPN (Koninklijke KPN N.V. Netherlands)
- KPN (Koninklijke KPN N.V.)
- MasterCard
- O2 Slovakia
- Orange (Belgium)
- Orange (France)
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- Orange (Slovakia)
- Orange (Spain)
- PayPal
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- Proximus Group
- SFR (Société Française Du Radiotéléphone)
- T-Mobile International (Austria)'
- T-Mobile International (Germany)
- T-Mobile International (Greece)
- T-Mobile International (Netherlands)
- T-Mobile International (Slovakia)
- Tele2 (Estonia)
- Tele2 (Italy)
- Tele2 (Latvia)
- Tele2 Netherlands
- Telefónica
- Telefónica Deutschland
- Telia (Finland)
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- Telkom
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- Visa
- Vodafone (Spain)
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- Wind Telecomunicazioni