The server that hosts odnoklassniki.ru is located in Moscow, Russia on the Golden Telecom network. The programming language used on the site is Java and the main language used for the sites textual content is Russian.

What country is OK ru?

Russian Odnoklassniki (“OK” or OK.ru) is the oldest Russian social network. The site was launched in March 2006, seven months ahead of the other primary social network in Russia, Vkontakte (“VK”). Both sites are owned by Mail.ru Group, a Russian internet company which operates internationally under My.com.