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Public Meetings Regarding 415 Area Code Change Announced
Posted Date: 1/15/2013

Area Code Map v150The California Public Utilities Commission (CPUC) has scheduled four meetings to provide information to the public regarding the introduction of a new area code to the region now served by the 415 area code.

The purpose of the meetings is to obtain input from the public regarding the opening of a new area code in the region currently served by the 415 area code.

The 415 area code, serving San Francisco and Marin, is expected to use up all the available prefixes (the first three numbers after the area code in a phone number) by October 2015.

To ensure that new numbers are available for customers and technology expansion, the CPUC has begun the process to introduce a new area code, 628, to the geography now served by 415.

Comments from the public can help the CPUC reach an informed decision and members of the public are encouraged to attend one of the following meetings:

Meeting Type  Date and Time  Location 
Local Jurisdiction Meeting (for local and elected officials; open to the public) Wednesday, January 16, 2013, 2:00 pm CPUC Auditorium, 505 Van Ness Ave., San Francisco
Public Meeting Wednesday, January 16, 2013, 7:00 pm CPUC Auditorium, 505 Van Ness Ave., San Francisco
Public Meeting Thursday, January 17, 2013, 2:00 pm San Rafael City Council Chambers, 1400 Fifth Ave., San Rafael
Public Meeting Thursday, January 17, 2013, 7:00 pm San Rafael City Council Chambers, 1400 Fifth Ave., San Rafael

Background Information: 
On September 6, 2012, the North American Numbering Plan Administrator (NANPA), the neutral third-party area code relief planner for California, held a meeting with service providers to the 415 area code to get their input regarding the most appropriate method of introducing the 628 area code. There are two options:

  • Area Code Overlay: An area code overlay occurs when more than one area code serves the same geographic area. In an area code overlay, a new area code is assigned within the same geographic area as the existing area code. With an overlay, all current customers keep their area code and telephone number. Numbers from this new area code may be assigned to new telephone customers or those adding additional lines. Because two area codes reside in the same geography, all calls must be dialed using the area code + the seven-digit telephone number (10 digits).

  • Geographical Split: The 415 area code would be split into two geographic areas, leaving the existing area code to serve one side of the geographic area and assigning a new area code (628) to the remaining area.

The industry consensus resulting from the September NANPA meeting meeting was to recommend an overlay. The next phase of the process is to provide the public an opportunity to participate in the decision making process.

Public Process:
The CPUC has scheduled the meetings listed above to inform the public about the area code alternatives and to receive public comment. After the meetings, NANPA will submit an application to the CPUC for the new area code recommending the industry desired solution. In response to NANPA’s application, the CPUC will open a proceeding, consider the information presented by NANPA and comments from the public, and issue a Proposed Decision for CPUC vote. After the CPUC has made its decision, service providers are required to implement the new area code within a specified period, usually within one year.

How to Comment:
The CPUC considers comments made by the public up until a decision is made by the CPUC’s Commissioners. The public is invited and encouraged to attend any of the meetings. If unable to attend, written comments may be submitted to the CPUC’s Public Advisor’s Office at 320 W. 4th St., Suite 500, Los Angeles, CA 90013, or via email to Comments can also be submitted via the CPUC’s online form at

There is also an Area Code Hotline available to answer your questions: (866) 340-6147.

If accessibility assistance is required in order to attend the meetings, such as a sign language interpreter, please contact the CPUC’s Public Advisor’s Office five business days prior to the meeting date toll free at 866-849-8390 or toll free TTY at 866-836-7825.

For more information on the 415 area code, please visit

For more information on the CPUC, please visit