Area Code 797 – Puebla
The phone area code for Puebla is 797 (international format +52797). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 797
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Puebla
Overview of Area Code 797
Area code 797 is a geographic numbering plan area (NPA) in Mexico, assigned to the state of Puebla. It serves a significant portion of the central-eastern region of the country, covering both urban and rural communities. The code is part of the North American Numbering Plan (NANP) administered under the ITU-T E.164 standard, with Mexico's country calling code +52. The area code is used for fixed-line (PSTN) services, including residential, business, and government lines.
Geographic Coverage and Administrative Jurisdiction
Area code 797 covers the southern and southeastern parts of the state of Puebla, including the municipalities of Tehuacán, Ajalpan, and their surrounding areas. Tehuacán is the largest city in this region and serves as a major commercial and cultural hub. The code also extends to smaller towns and rural localities, providing essential telecommunication services to a diverse population. The administrative jurisdiction falls under the Federal Telecommunications Institute (IFT), which regulates numbering resources in Mexico.
Primary Cities and Local Dialing
Key cities within area code 797 include Tehuacán, Ciudad Serdán, and Tlachichuca. For local calls within the same area code, callers must dial the 7-digit local number (e.g., 123 4567). For calls from other area codes within Mexico, the full national format is required: 01 797 123 4567. International callers must use the country code and area code without the leading '0': +52 797 123 4567.
Overlay Considerations and Numbering Changes
As of the latest IFT updates, area code 797 does not have an overlay code. However, due to growing demand for telecommunication services, the IFT periodically reviews numbering resources. If an overlay is introduced, 10-digit dialing would become mandatory for local calls. Currently, local calls within the area code can be made using 7-digit dialing, but it is advisable to use the full national format to ensure compatibility with mobile and VoIP networks.
Caller Instructions for Local and Foreign Callers
For local callers within area code 797, simply dial the 7-digit number. For callers from other parts of Mexico, dial 01 (national long-distance prefix) followed by 797 and the 7-digit number. For international callers, dial the international access prefix (e.g., 00 from many countries), then Mexico's country code 52, then 797, and the 7-digit number. For example, to call a number in Tehuacán from the United States, dial 011 52 797 123 4567. From a mobile phone in Mexico, it is common to dial the full national number (e.g., 797 123 4567) as mobile networks often require the area code even for local calls.
Technical Considerations
Area code 797 is designated for geographic fixed-line services, but some numbers may be used by VoIP providers that offer location-independent services. However, the number's geographic nature means that it is associated with the physical location of the line. For emergency services, callers in the area code should dial 911, which is the universal emergency number in Mexico. The IFT ensures that all numbers within this area code are allocated efficiently to meet the communication needs of the region.