323 Area Code

On November 24, 2015, the North American Numbering Plan Administrator (NANPA) filed an application to introduce another area code, the existing 213 area code, to the area now served by the 323 area code. The CPUC opened a proceeding (A.15-11-017) to consider the NANPA’s application, and on July 14, 2016, the CPUC took action to ensure that phone numbers continue to be available to meet the demand in the 323 area code by approving a boundary elimination overlay of the 213 and 323 area codes. The boundary elimination overlay allows both the 213 and 323 area codes to be used in the same geographic region. Read our press release. More information about the proceeding may be obtained through the proceeding docket card.

The boundary elimination overlay does not require customers with a 323 or 213 area code to change their existing telephone number and area code, but does require them to dial “1” followed by the area code and the seven-digit telephone number on every call, including calls within the same area code.
Starting January 14, 2017, customers with a 213 or 323 area code telephone numbers may begin using the new dialing procedure by pressing or dialing 1 + area code + 7-digit telephone number to place a call. Calls that are dialed with the 7-digit telephone number only will still be completed. Beginning July 8, 2017, all calls will require dialing 1 + area code + 7-digit telephone number. Calls that are placed with the 7-digit telephone number only will result in a recording instructing the caller to hang up and dial again using the new dialing procedure.



The 323 area code was forecasted to use up all its available prefixes by the 3rd quarter of 2017. Adding the 213 area code to the 323 will provide additional prefixes and ensure new telephone numbers are available for the 323 customers. The 323 area code, in addition to serving a large portion of the City of Los Angeles, serves the cities of Alhambra, Bell, Bell Gardens, Beverly Hills, Commerce, Cudahy, Glendale, Hawthorne, Huntington Park, Inglewood, Lynwood, Maywood, Montebello, Monterey Park, Pasadena, Rosemead, South Gate, South Pasadena, Vernon and West Hollywood. The 213 area code serves the downtown portion of the City of Los Angeles.

Public Meetings were held on September 8, 9 and 10, 2015, in the City of Los Angeles, South Gate and South Pasadena. During the meetings, attendees asked questions and expressed their comments. Most attendees were concerned about losing their existing phone numbers. CPUC and NANPA staff assured the audience that all customers will keep their existing phone numbers, including their area code. Only those requesting new or additional phone lines will be assigned the 213 area code.

The Commission adopted Decision 16-07-014 and approved a boundary elimination overlay of the 213 and 323 area codes on July 14, 2016.

Decision 16-07-014 also requires telephone service providers that provide service in the 213 and 323 area codes to implement and fund a program to educate the affected public about the transition, especially the new dialing procedure. Notifications that were provided to customers as well as materials that were presented at the public meetings are available below.

213 and 323 Public Meeting Materials

213 and 323 Public Meeting Report

213 and 323 Customer Education Materials

213 and 323 Area Code Map

323 Area Code Background;

323 Frequently Asked Questions

Nov. 15, 2016: CPUC Reminds Customers of New Dialing Procedures for 213 and 323 Area Codes

June 13, 2017: CPUC Offers Reminder That 323 And 213 Area Codes Require Dialing 1+Area Code+ Telephone Number For All Calls Beginning July 8

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