Oi (IPA: , Portuguese for "Hi"), formerly known as Telemar, is the largest fixed telephone operator and the fourth mobile telephone operator in Brazil, being the third largest telecommunication company in Latin America. It is headquartered in Rio de Janeiro. In 2013, Oi announced its merger with Portugal Telecom, the largest telecommunication company in Portugal, in order to strengthen the Brazilian firm and simplify its ownership structure. In June 2015 Portugal Telecom was acquired by Altice Group. On June 20, 2016, Oi filed for a US$19 billion (R$65 billion) bankruptcy protection, the largest on record for Brazil. More information...
According to PR-model, oi.com.br is ranked 103,887th in multilingual Wikipedia, in particular this website is ranked 3,598th in Portuguese Wikipedia.
The website is placed before npru.ac.th and after frequence-sud.fr in the BestRef global ranking of the most important sources of Wikipedia.