Telefónica Slovakia

O2 Slovakia, s.r.o.

Type	Private (subsidiary of O2 Czech Republic)
Industry	Telecommunication
Founded	(2006 (2006))
Headquarters	Bratislava, Slovakia
Area served	Slovakia
Services	Telecommunications
Owner	PPF
Parent	O2 Czech Republic
Divisions	Telecommunication
Website	www.o2.sk

O2 Slovakia is a provider of mobile service in Slovakia. O2 started as Telefónica 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 1 700 000 active SIM cards (3 month activity) to date 1 September 2015. The company is subsidiary of O2 Czech Republic, itself owned by PPF.

Users are identified by prefix 940, 944, 948 and 949 in mobile number. (+421 94x yyy yyy)

O2 Slovakia, s.r.o, Einsteinova 24, SK- 851 01 Bratislava, Bratislava, Slovakia

...
Wikipedia