Area Code 836 – Tamaulipas
The phone area code for Tamaulipas is 836 (international format +52836). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 836
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Tamaulipas
Geographic Coverage and Administrative Jurisdiction
The Mexican area code 836 is a geographic National Destination Code (NDC) assigned to the northeastern state of Tamaulipas, specifically serving the municipality of Hidalgo and its surrounding localities. This region is situated near the U.S.-Mexico border, and the code facilitates both local and international telecommunications traffic. The primary urban center within this code is the city of Hidalgo, along with smaller communities such as Estación Manuel and other rural settlements. Administratively, the code falls under the jurisdiction of the Federal Telecommunications Institute (IFT) and is allocated for fixed-line PSTN services, although some mobile and VoIP numbers may also be assigned within this range.
Dialing Formats and Caller Instructions
For callers within Mexico, dialing a number in the 836 area code requires the national long-distance prefix 01 followed by the area code and the seven-digit local number. For example, to call a fixed line in Hidalgo from Mexico City, you would dial: 01 836 123 4567. For international callers, the format is the Mexican country code +52, then the area code (dropping the leading '0'), followed by the seven-digit subscriber number. Thus, from the United States or any other country, you would dial: +52 836 123 4567.
It is important to note that within the same area code, local calls are typically made using only the seven-digit number, without the area code or the '01' prefix. However, due to the implementation of the national numbering plan, some regions have introduced overlay codes, but as of now, 836 does not have an overlay, so ten-digit dialing is not required for local calls.
Overlay Considerations and Numbering Plan
Currently, there is no overlay code for the 836 area, meaning that the code is exclusive to the Hidalgo region. However, users should be aware that number portability is in effect in Mexico, allowing subscribers to retain their numbers when switching between fixed-line carriers. This means that a number with the 836 prefix could potentially be served by any licensed operator, not just the original incumbent. For emergency services, callers within the 836 area should dial 911 for police, fire, or medical assistance, regardless of the service provider.
When dialing from a mobile phone within Mexico, it is common practice to include the area code even for local calls, as mobile numbers are non-geographic and require the full ten-digit number preceded by the national prefix. For example, from a mobile phone, you would dial 01 836 123 4567 for a fixed line in Hidalgo. International callers should always use the +52 country code, followed by the area code and number, as shown above.