O2

O2 is a telecommunications company Telefónica Europe, a European telecommunications provider trading as O2 (typeset as O2), based in Slough, Berkshire, UK. The company provides services in the UK, Ireland, Isle of Man, Germany, the Netherlands, Czech Republic and Slovakia.

Websites: o2.com, o2.co.uk, o2online.ie, o2online.de, telfort.nl, o2.co.sk, o2.co.cz