Area Code 657 California, USA

WhereCall is here to provide you with the most information on the area code 657, located in California, USA. This area code contains 123 prefixes and is not in jeopardy of exceeding the known supply of central office codes during the planning/implementation interval for relief.


NPA Information
Area Code (NPA)657
LocationCalifornia, USA
In Jeopardy?No
Is Assigned?Yes
Assignment Date01 Apr 1999
In Service?Yes
In Service Date23 Sep 2008
Parent NPA714
OverlayYes
Overlay Complex657/714
Predominant Timezone(s)UTC-08:00
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