Boundary Elimination Area Code Overlay Approved for the 619 and 858 Area Codes.

To ensure a continuing supply of telephone numbers, the boundary between the current geographic region served by the 619 and 858 area codes will be eliminated so that both area codes will serve the same geographic region. This is known as a boundary elimination area code overlay. Get ready to change the way you dial your calls!

What is a boundary elimination area code overlay?

In this case, the boundary line between the 619 and 858 area codes is being eliminated, so that the existing 858 area code will serve the same geographic region as the existing 619 area code, and conversely, the existing 619 area code will serve the same geographic region as the existing 858 area code. In other words, the two regions served by the 858 and 619 area codes are being combined, and telephone numbers for either area code will be assigned in the newly combined region. A boundary elimination area code overlay does not require customers to change their existing area code, but does require customers to dial the area code + telephone number on every call, including local calls within the same area code.

Who will be affected?

The 619 area code principally serves the southern portion of the City of San Diego and the adjacent cities of Chula Vista, Coronado, El Cajon, Imperial Beach, La Mesa, Lemon Grove, National City, Santee and unincorporated areas of San Diego County. The 858 area code serves the northern portion of the City of San Diego along with the adjacent cities of Del Mar, Poway, Solana Beach and a small portion of the City of Encinitas, as well as an unincorporated area of San Diego County. Once the boundary elimination area code overlay is implemented, both area codes will serve the combined region.
 

What will be the new dialing procedure?

To complete calls from a landline phone, the new dialing procedure requires anyone with a 619 or 858 area code to dial 1 + area code + telephone number. This means that all calls in the 619 and 858 area codes 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 619 or 858 area code.

When will the change begin?

  • Effective November 11, 2017, you should begin using the new dialing procedure whenever you place a call from the 619 or 858 area codes. If you forget and dial just seven digits, your call will still be completed.
  • Beginning May 19, 2018, you must use the new dialing procedure, as described above for all calls. After this date, if you do not use the new dialing procedures, your calls will not be completed and a recording will instruct you to hang up and dial again.
  • Beginning June 19, 2018, new telephone lines or services in the former 619 region may be assigned numbers using the 858 area code, and conversely, new telephone lines or services in the former 858 region may be assigned numbers using the 619 area code.

What will you need to do?

In addition to changing your dialing procedure, all services, automatic dialing equipment, or other types of equipment that are programmed to dial a 7-digit number will need to be reprogrammed to use the new dialing procedures. Some examples are life safety systems and medical monitoring devices, PBXs, fax machines, Internet dial-up numbers, alarm and security systems and gates, speed dialers, call forwarding settings, voicemail services, etc. You may also want to check your personal and business stationery and checks, advertising materials, websites, contact information, and personal or pet ID tags to ensure the area code is included.
 

What will remain the same?

  • Your telephone number, including current area code, will not change.
  • The price of a call, coverage area, or other rates and services will not change due to the overlay.
  • What is a local call now will remain a local call regardless of the number of digits dialed.
  • You will continue to dial 1+ area code + telephone number for all calls to other area codes (outside of 315 and 680).
  • You can still dial just three digits to reach 911, as well as 211, 311, 411, 511, 611, 711 and 811.
     

Who may you contact with questions?

If you have any questions regarding information provided in this notice, please call T-Mobile USA at 1-877-453-1304 or access the following website for more information: http://www.cpuc.ca.gov/619areacode/.