Area Code 891 – Tamaulipas

Overview of Area Code 891 (Tamaulipas, Mexico)

Area code 891 is a geographic National Destination Code (NDC) assigned to the northern region of the state of Tamaulipas, Mexico. Under the ITU-T E.164 international dialing standard, the full country calling code for Mexico is +52, and when dialing a number in this region from abroad, you must use the format +52 891 XXX XXXX. Domestically, within Mexico, the same number is dialed as 891 XXX XXXX, omitting the country code but retaining the area code. This area code serves a mix of urban and rural communities, with the principal city being Reynosa, a major border city across from Hidalgo, Texas. Other localities covered include Río Bravo, Díaz Ordaz, and smaller surrounding towns. The region is known for its maquiladora (manufacturing) industry and significant cross-border commerce.

Geographic Coverage and Administrative Jurisdiction

The 891 area code covers the northeastern part of Tamaulipas, bordering the U.S. state of Texas. The administrative jurisdiction falls under the Mexican Secretariat of Communications and Transportation (SCT) and the Federal Telecommunications Institute (IFT). The numbering plan is regulated by IFT, which oversees the allocation of NDCs to local exchange carriers. The coverage area is primarily along the Rio Grande (Río Bravo) valley, and the region is part of the larger border economic zone. The principal city, Reynosa, is the seat of the municipality of the same name and is one of the most populous cities in Tamaulipas.

Dialing Formats and Caller Instructions

For local callers within the 891 area code, calls to another number in the same area code can be made using the 8-digit local number (XXX XXXX). However, it is common practice to dial the full 10-digit number (891 XXX XXXX) even for local calls, as per Mexico's dialing guidelines. For long-distance calls from other parts of Mexico, dial the prefix '01' followed by the area code and number: 01 891 XXX XXXX. For international callers, dial your country's exit code (e.g., 011 from the U.S. and Canada), then Mexico's country code 52, then the area code 891, and the 8-digit subscriber number: +52 891 XXX XXXX. There are no overlay codes in this area; 891 is the sole area code for the region, so no 10-digit dialing is required for local calls, but it is recommended for clarity.

Numbering and Technical Considerations

All numbers within area code 891 are 8 digits long, following the format 891 XXX XXXX. The first digit of the subscriber number is typically 2-9, as 0 and 1 are reserved for special services. The region is served by both fixed-line PSTN and mobile networks, but mobile numbers in Mexico are non-geographic and are assigned separate mobile prefixes (e.g., 899, 844, etc.) that are not tied to a specific area. Therefore, a call to a mobile number in Reynosa will not use the 891 prefix. For fixed-line numbers, the 891 prefix is used for both local and international calls. The network supports traditional copper lines, fiber-optic broadband, and VoIP services, but the area code remains geographic regardless of the underlying technology.