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
Location California, USA
In Jeopardy? No
Is Assigned? Yes
Assignment Date 01 Apr 1999
In Service? Yes
In Service Date 23 Sep 2008
Parent NPA 714
Overlay Yes
Overlay Complex 657/714
Predominant Timezone(s) UTC-08:00
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