Area Code 872 – Coahuila/Durango

Geographic Coverage and Administrative Jurisdiction

The area code 872 is a geographic National Destination Code (NDC) assigned within the Mexican numbering plan (country code +52). It serves a defined region spanning parts of the states of Coahuila and Durango, in north-central Mexico. This code is allocated to fixed-line (PSTN) services, providing local telephony to residential, commercial, and government subscribers within its coverage area. The specific cities and towns covered under 872 include, among others, Torreón (in Coahuila) and Gómez Palacio and Ciudad Lerdo (in Durango). This metropolitan area, often referred to as the Comarca Lagunera, is a major industrial and agricultural hub, making the 872 code essential for business and personal communications in the region.

Dialing Formats and Caller Instructions

For callers placing a call to a number with the 872 area code, the dialing format depends on the caller's location:

• Local calls (within the 872 area): When dialing from a landline or mobile phone that shares the same area code, it is generally possible to dial the 7-digit local number directly. However, due to the multi-state nature of the region, some local calls may require the full 10-digit format (area code + local number) to ensure proper routing. Always verify with your service provider.
• National calls (from other parts of Mexico): Dial the long-distance prefix 01, followed by the area code 872, and then the 7-digit local number. For example, to call a number in Torreón from Mexico City, you would dial: 01 872 XXX XXXX.
• International calls (from outside Mexico): Dial your country's international exit code (e.g., 011 from the US/Canada, 00 from many European countries), followed by Mexico's country code +52, then the area code 872 (without the leading '0' used in national dialing), and the 7-digit local number. For instance, a caller from the United States would dial: 011 52 872 XXX XXXX or using the plus sign: +52 872 XXX XXXX.

Number Structure and Overlay Considerations

Mexican fixed-line numbers consist of a 10-digit national significant number (NSN) when including the area code. For area code 872, the local number is 7 digits long. It is important to note that the 872 area code is an overlay for the region that previously used area code 871. This means that both 871 and 872 serve the same geographic area, and callers must dial the full 10-digit number (area code + local number) even for local calls to ensure proper routing. This overlay was introduced to meet the growing demand for telephone numbers in the Comarca Lagunera region.

Regulatory and Technical Notes

The Mexican Federal Telecommunications Institute (IFT) manages the numbering plan. Area code 872 is designated for geographic fixed-line services, but with the advent of number portability, subscribers may retain their 872 numbers even if they switch to a VoIP or mobile service provider, as long as the service address remains within the same geographic area. This ensures that businesses and residents can maintain a stable local presence. For any technical issues or number assignments, the IFT is the authoritative source.