Area Code 247 – Huamantla/San Cosme Xalostoc, TLAX

Overview of Area Code 247 (Mexico)

Area code 247 is a geographic numbering plan area (NPA) within the Mexican national numbering plan, administered under the ITU-T E.164 standard. It serves the eastern portion of the state of Tlaxcala, primarily covering the municipalities of Huamantla and San Cosme Xalostoc, as well as surrounding localities. This region is part of the Altiplano central highlands, situated at an elevation of approximately 2,500 meters above sea level.

Geographic Coverage and Administration

The 247 area code is assigned to the Tlaxcala state numbering region, which is managed by the Instituto Federal de Telecomunicaciones (IFT). The principal city, Huamantla, is known for its colonial architecture and annual festival, while San Cosme Xalostoc is a smaller adjoining community. The area code also covers nearby towns such as Benito Juárez, Ignacio Zaragoza, and Lázaro Cárdenas, all within the Huamantla municipality. This is a geographic code, meaning that the number is tied to a physical location and is used for fixed-line (PSTN) services, including traditional copper lines, cable telephony, and fixed wireless access.

Dialing Formats and Procedures

For local calls within the 247 area code, the 3-digit area code is not required; callers can simply dial the 7-digit local subscriber number. However, for calls from other area codes within Mexico, the full national format must be used: 01 247 XXX XXXX. The leading '01' is the national long-distance prefix. For international callers, the format is +52 247 XXX XXXX, where '+52' is Mexico's country calling code. When dialing from a mobile phone within Mexico, the '01' prefix is often replaced by '+52' or '044' depending on the carrier and call type, but for fixed-line numbers, the standard is '01'.

Numbering and Overlay Considerations

Subscriber numbers in the 247 area code are 7 digits long, and the total length of a national significant number (NSN) is 10 digits (excluding the country code). Currently, there is no overlay area code in this region, so all fixed-line numbers share the 247 prefix. However, due to growing demand, the IFT has implemented number pooling and portability, allowing subscribers to retain their numbers when changing service providers. It is important to note that area code 247 is distinct from the adjacent 246 area code (which covers Apizaco and Calpulalpan) and the 248 area code (which serves Zacatlán and other parts of Puebla). Callers should verify the correct area code to avoid misdialing.

Caller Instructions

For local callers within the 247 region, simply dial the 7-digit number. For long-distance callers within Mexico, dial 01 247 followed by the local number. For international callers, dial your country's exit code (e.g., 011 from the US and Canada), then 52, then 247, and the 7-digit number. For example, to call a Huamantla business from the United States, you would dial 011 52 247 123 4567. Remember to replace the example digits with the actual subscriber number.