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On April 24, 2008 the CPUC issued D.08-04-058 splitting the 760 and creating the 442 area code. The western portion of the 760, northern San Diego County, will have the new area code 442. The area in the eastern portion, Imperial, Riverside, San Bernardino, Inyo counties and portions of Kern and Mono counties will remain 760. the sechdule for implementation of the new area code is as follows:
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Activity |
Time |
Date |
| Start of permissive dialing and latest date for all service providers to activate 442 area code |
12:01 AM Pacific Time |
November 8, 2008 |
| Start of mandatory dialing of 442 area code |
12:01 AM Pacific Time |
May 16, 2009 |
| End of requirement for recorded announcement |
-- |
November 8, 2009 |
| 442 area code initial order date |
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February 8, 2009 |
The 760 area code serves an area in the most southern part of California that extends from Inyo and Mono county east of the Sierras, to the Nevada and Arizona borders, to the Mexico border and west to northern San Diego county. At 46,666 square miles, its area is equal to 29% or nearly one third of California. It is geographically the largest area code within California. The 760 was created in 1991 when it was split from the 619 area code. For more detailed information go to the 760 Area Code History page.
Recognizing that the supply of available prefixes in the 760 area code will not exend beyond two more years, the North American Numbering Plan Administrator (NAMPA) filed Application 07-06-018 with the Public Utilities Commission on June 18, 2007. NAMPA’s application is the product of industry planning meetings and includes notes on the public meetings held in the 760 in Apple Valley, Palm Springs, Carlsbad and El Centro in February 2007. The application also includes a listing of all public comments received up to the time of the application.
NAMPA’s recommendation was a consensus of industry preferences, which supported an all services overlay as a solution to the requirement for more numbering resources in 760.
Public comments received as of October 31, 2007, indicate that the public prefers a geographic split at the following levels:
If you need help understanding this area code change and other terms, please see the additional information available on the Area Code Changes Frequently Asked Questions page. These materials should help in making a more informed decision. You can also contact your service provider for information. For questions unanswered by your service provider and the reference materials, please contact the Public Advisor's Office at (866) 340-6147.