It is headquartered in Guaynabo, Puerto Rico, and has operated for almost a century offering voice, data, long distance, broadband, directory publishing and wireless services for the island residents and businesses.

[1] Originally, Puerto Rico Telephone Company eventually spawned ITT Corporation, which was founded by Sosthenes Behn.

The company was a public corporation of the government of Puerto Rico for many years until the majority stakes were acquired by GTE in the mid-1990s.

After another three months and various litigations upon the Federal Communications Commission, which had advised from the Puerto Rico Telecommunications Board, on March 30, 2007, TELPRI assets were completely acquired by América Móvil.

[5] As of February 2011, America Móvil has rebranded its wireline (fixed line), broadband DSL, television and dial-up services as Claro.