Area code 664 (Mexico)

Area code 664 is a telephone area code in Mexico. It serves the state of Baja California, specifically the municipalities of Tijuana and Rosarito. This area code is part of the North American Numbering Plan (NANP), allowing for direct dialing from and to other NANP regions, such as the United States and Canada. The introduction of this area code helped alleviate the strain on the previously existing area codes in the region, improving call routing efficiency and preventing number exhaustion. The specific geographic boundaries covered by 664 are subject to change as the telecommunications infrastructure in Baja California evolves. Further research may be needed to obtain precise, up-to-date geographical coverage.