Editing Area code 650 (section)

{{short description|Area code for San Mateo County and parts of Santa Clara County, California}}
{{California area codes image map|650}}
'''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, California|San Mateo County]] (except the  northernmost portion), part of [[San Francisco]], and the northwestern portion of [[Santa Clara County, California|Santa Clara County]] including [[Palo Alto, California|Palo Alto]], [[Mountain View, California|Mountain View]], and [[Los Altos, California|Los Altos]].

Prior to October 2021, area code 650 had telephone numbers assigned for the [[central office code]] 988. In 2020, ''988'' was designated nationwide as a dialing code for the [[National Suicide Prevention Lifeline]], which created a conflict for exchanges that permit [[seven-digit dialing]]. This area code was therefore scheduled to transition to [[ten-digit dialing]] by October 24, 2021.<ref name="pl556">{{cite web|url=https://nationalnanpa.com/pdf/PL_556.pdf|date=January 8, 2021|publisher=North American Numbering Plan Administrator |title=Transition to 10-digit dialing (for 988 as 3-digit access to National Suicide Prevention Hotline)|access-date=March 9, 2021}}</ref>