Area Code 274 – Oaxaca

Overview of Area Code 274

Area code 274 is a geographic National Destination Code (NDC) assigned to the state of Oaxaca in southern Mexico. It serves a predominantly rural and mountainous region, with the city of Huajuapan de León as its primary urban center. The code covers the Mixteca region, including municipalities such as Heroica Ciudad de Huajuapan de León, Santiago Juxtlahuaca, and Tlaxiaco, among others. This area is characterized by its rich indigenous heritage and is an important commercial hub for the surrounding communities.

Dialing Formats

When calling a number within area code 274 from within Mexico, the national trunk prefix '0' is not used; instead, callers simply dial the 10-digit number: 274 XXX XXXX. For international callers, the full E.164 format must be used: +52 274 XXX XXXX. For example, to call a business in Huajuapan de León from abroad, you would dial +52 274 123 4567.

Numbering and Overlays

All local numbers within area code 274 consist of seven digits, making the complete national significant number ten digits (including the NDC). As of the latest ITU-T and Mexican Federal Telecommunications Institute (IFT) guidelines, there are no overlay codes in this region, meaning area code 274 is the sole geographic code for this area. However, due to increasing demand for telecommunication services, the IFT periodically reviews numbering resources, and future overlays are possible.

Caller Instructions

For local callers within the same area code, it is still necessary to dial the full 10-digit number (including the area code) for all calls, as per the national dialing plan implemented in Mexico. This applies to both landline and mobile calls. For callers from other area codes in Mexico, dial 274 followed by the seven-digit local number. For international callers, always use the plus sign (+) or the international access prefix (e.g., 011 from the US) followed by 52, then 274, and the local number.

Geographic and Administrative Context

The region served by area code 274 is part of the state of Oaxaca, which is known for its diverse geography and cultures. The area code boundaries generally follow municipal limits, but some rural communities may have non-contiguous coverage due to terrain. The region's economy is primarily based on agriculture, small-scale manufacturing, and trade. Huajuapan de León, often referred to as the 'Heroic City,' is the largest city in the Mixteca region and serves as the main commercial and administrative center for the area code.

Understanding the correct dialing format is crucial for both domestic and international callers to ensure successful connection. As Mexico's numbering plan continues to evolve, staying updated with official IFT announcements is recommended for businesses and individuals who frequently communicate with this region.