o2 my Service
Conntac GmbH
Mein o2
Telefónica Germany GmbH & Co. OHG
Moje O2
O2 Czech Republic a.s.
O2 TV
Poczta o2
Wirtualna Polska Media S.A.
Mi O2
O2 España
o2 Voicemail
Service NSW
Xiaomi Service+
Xiaomi Technology India Private Limited
Funeral Service
Sa Hoang