Area Code 381 – San Miguel de Tucumán, Tucumán
The phone area code for San Miguel de Tucumán, Tucumán is 381 (international format +54381). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 381
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of San Miguel de Tucumán, Tucumán
Overview of Area Code 381
Area code 381 is a geographic National Destination Code (NDC) assigned to the city of San Miguel de Tucumán, the capital of the province of Tucumán, in northwestern Argentina. This code serves the Greater San Miguel de Tucumán area, including the city itself and its surrounding metropolitan region, which is one of the most densely populated areas in the country. As a geographic code, it is tied to a specific physical location and is used for fixed-line (PSTN) services, as well as for some VoIP and mobile services that are ported to this region.
Geographic Coverage and Administrative Jurisdiction
The 381 area code covers the administrative jurisdiction of the Capital Department of Tucumán Province, which includes San Miguel de Tucumán and its immediate urban agglomeration. This area is the political, economic, and cultural hub of the province, hosting major government institutions, universities, and commercial centers. The code is administered under the national numbering plan of Argentina, regulated by the Ente Nacional de Comunicaciones (ENACOM).
Dialing Formats and Instructions
To call a fixed-line number in San Miguel de Tucumán, the standard national format is area code + subscriber number. Local numbers within the 381 area consist of 7 digits, so the full national number is 381 + 7 digits (total 10 digits). For international callers, the format is +54 381 7-digit number (the leading trunk prefix '0' is omitted when dialing from abroad).
Examples:
- Local call (within 381): Dial 381 456-7890 (if your phone is in the same area code, you may omit the area code and dial just the 7-digit number).
- National long-distance call (from other Argentine cities): Dial 0 381 456-7890 (trunk prefix '0' + area code + subscriber number).
- International call (from outside Argentina): Dial your country's exit code, then 54 381 456-7890.
Overlay and Numbering Considerations
As of the latest ENACOM updates, there is no overlay code for the 381 area; it remains the sole geographic code for San Miguel de Tucumán. However, due to the growth of mobile and VoIP services, some numbers with the 381 prefix may be assigned to mobile operators or VoIP providers, but the prefix itself is officially designated as geographic. When dialing from abroad, it is essential to include the country code (+54) and to drop the leading '0' of the trunk prefix.
Caller Instructions
For local callers: If you are within the 381 area, you can dial the 7-digit subscriber number directly for local calls. For calls to other area codes in Argentina, you must dial the trunk prefix '0' followed by the area code and subscriber number.
For international callers: Always use the international access code (e.g., 011 from the US, 00 from many countries) followed by Argentina's country code 54, then the area code 381 (without the leading '0'), and the 7-digit subscriber number. Ensure you have the correct number of digits; Argentine fixed-line numbers are 10 digits in total (including the area code).