Texas 210 Area Code / 726 Area Code Overlay

Mandatory 10-Digit Dialing Begins September 23, 2017 In Texas 210 Area Code

Beginning September 23, 2017, all local calls made within the Texas 210 area code must be placed using the 10-digit telephone number (area code plus the 7-digit telephone number). This change paves the way for an additional area code (726) for new telephone lines and services in the same geography.

To ensure a continuing supply of telephone numbers, the Public Utility Commission of Texas approved an all services overlay as the relief method for the 210 area code. The new 726 area code will be “overlaid” or superimposed over the same geographical area as the 210 area code, which generally covers the greater San Antonio area including all or portions of the cities of Alamo Heights, Balcones Heights, Castle Hills, Cibolo, Converse, China Grove, Elmendorf, Fair Oaks Ranch, Garden Ridge, Grey Forest, Helotes, Hill Country Village, Hollywood Park, Kirby, Leon Valley, Live Oak, Olmos Park, Saint Hedwig, Schertz, Selma, Shavano Park, Terrell Hills, Universal City, Von Ormy, and Windcrest within the counties of Atascosa, Bexar, Comal, Guadalupe, Medina, and Wilson.

Beginning Monday, October 23, 2017, customers in the 210 area code region requesting new service, an additional line, or in some cases moving their service, may be assigned a number in the new 726 area code.

Since March 25, 2017, customers have been able to place calls within the 210 area code by dialing the customary 7 digits or by dialing 10 digits (area code + 7 digits). However, on September 23, 2017, the option to place calls within the 210 area code using 7 digits will end, and all calls must be placed using the 10-digit telephone number. If a customer forgets and dials just 7 digits, then the call will not be completed and the customer will hear an announcement instructing him or her to hang up and redial using the area code. On October 23, 2017, the new 726 area code becomes effective, and customers receiving numbers from the 726 area code must dial the area code on every call placed as well. 

The most important facts that consumers and businesses need to know about the upcoming 726 area code overlay are:

  • Your telephone number, including current area code, will not change.
  • You will need to dial area code + telephone number for all local calls.
  • You will continue to dial 1+ area code + telephone number for all long distance calls.
  • What is a local call now will remain a local call.
  • The price of a call, coverage area, or other rates and services will not change due to the overlay.
  • You can still dial just three digits to reach 911, as well as 211, 311, 411, 511, 611, 711 and 811 where they are available.

Customers are reminded to identify their telephone numbers as a ten digit number (area code + 7-digit telephone number), and to include the area code when giving the number to their friends, family, business associates, and business customers, etc. Customers should also check their business and personal stationery, advertising materials, personal and business checks, and personal or pet ID tags to ensure that the area code is included in their telephone number.

Customers should ensure that all services, automatic dialing equipment, applications, software, or other types of equipment that are programmed to dial just 7-digits within the 210 area code are re-programmed to dial the area code + 7-digit telephone number. Some examples are life safety systems, fax machines, Internet dial-up numbers, alarm and security systems, gates, speed dialers, mobile phone contact lists, call forwarding settings, voicemail services, and similar functions. Customers should also ensure that such services and equipment recognize the new 726 area code as a valid area code. All seven-digit calls from programmed devices should be changed to 10-digits as soon as possible.

For more information, please visit the Public Utility Commission of Texas’s website at http://www.puc.texas.gov/industry/maps/areacodes/TxAreaCodes.aspx

Customers with any questions regarding information provided in this release may contact customer service at 866-247-2633.