Area code 650 is a telephone area code in the North American Numbering Plan (NANP) for the San Francisco Bay Area in the U.S. state of California. It was split from area code 415 on August 2, 1997, and includes most of San Mateo County (except the northernmost portion), part of San Francisco, and the northwestern portion of Santa Clara County including Palo Alto, Mountain View, and Los Altos.
650 es el código de área norteamericano para gran parte del condado de San Mateo (excluyendo la parte norte del condado) en California y parte del extremo noroeste del condado de Santa Clara, incluyendo Palo Alto, Mountain View y Los Altos.
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