Attention: Telephone Directory Publishers
To ensure a continuing supply of telephone numbers, the 747 area code will be added to the area served by 818. The new 747 area code will serve customers in the same geographic region as the current 818 area code, , which includes the communities in the San Fernando Valley, as shown on the map, and small parts of Pasadena and Thousand Oaks. This is known as an area code overlay.
What is an area code overlay? An overlay is the addition of another area code (in this case 747) to the same geographic region as an existing area code (818). An overlay does not require customers to change their existing area code.
How does this affect telephone directory publishers? On April 28, 2008 the California Public Utilities Commission (CPUC) in Order D.08-04-0509 approved an all-services distributed overlay as the relief method for the 818 NPA. This decision specifies that directories covering the 818 area code region must identify the area code in addition to the seven-digit number for each directory listing. Information pages that include instructions for dialing directory assistance to locate numbers applicable to different area codes within the same overlay region should also be updated.
What is the new dialing procedure?
To complete calls from a landline phone, the new dialing procedure requires callers to dial 1 + area code + telephone number. This means that all calls in the 818 area code that are currently dialed with seven digits will need to be dialed using 1+ area code + telephone number.
To complete calls from a cellular or mobile phone, callers may dial the area code + telephone number or 1 + area code + telephone number whenever placing a call from a phone number with the 818 or 747 area code.
When will the change begin?
Effective October 11, 2008, customers should begin using the new dialing procedure when placing calls from the 818 area code. If customers forget and use the old dialing procedure of dialing just seven digits, calls will still be completed.
Starting May 18, 2009, new telephone lines or services may be assigned numbers with the new 747 area code.
What will remain the same? The price of a call, coverage area, or other rates and services will not change due to the overlay, and what is a local call now will remain a local call regardless of the number of digits dialed. Customers can still dial just three digits to reach 911, as well as 211, 311, 411, 511, 611, 711 and 811.
If you have any questions about the overlay, you may contact your local service provider or the CPUC at (866) 340-6147. Information about the overlay is also available at http://www.cpuc.ca.gov/818areacode.
The 818 Public Education Committee in cooperation with the California Public Utilities Commission