|This article does not cite any references or sources. (May 2011)|
|Private (subsidiary of Telefónica Czech Republic)|
|Parent||Telefónica Czech Republic|
Telefónica Slovakia is a provider of mobile service O2 in Slovakia. Telefónica started in Slovakia with commercial services on 2 February 2007 with about 600.000 preregistered users, and ~400,000 Slovaks actively using the O2 service. The operator has 781,000 active SIM cards (3 month activity) to date 30 September 2010. The company is subsidiary of Telefónica Czech Republic, itself owned by PPF. Both companies use the O2 brand under licence from Telefónica Europe.
Users are identified by prefix 940, 944, 948 and 949 in mobile number. (+421 94x yyy yyy)