Odnoklassniki (Russian: Одноклассники, lit. 'Classmates'), abbreviated as OK or OK.ru, is a social network service used mainly in Russia and former Soviet Republics. The site was launched on March 4, 2006 Albert Popkov and is currently owned by VK. The website currently has more than 200 million registered users and 45 million daily unique visitors. Odnoklassniki also currently has an Alexa Internet traffic ranking of 56 worldwide and 7 for Russia. Odnoklassniki is the second most popular social network in Russia, behind VK (VKontakte) but ahead of Facebook, which is in 3rd place. More information...
According to PR-model, ok.ru is ranked 41,807th in multilingual Wikipedia, in particular this website is ranked 44,121st in English Wikipedia.
The website is placed before bardown.com and after fldoe.org in the BestRef global ranking of the most important sources of Wikipedia.