Area Code 257 – Braga
The phone area code for Braga is 257 (international format +351257). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 257
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Braga
Overview of Area Code +351 257
The country calling code +351 is assigned to Portugal under the ITU-T E.164 international numbering plan. Within the Portuguese national numbering plan, the prefix 257 is a Geographic Area Code, specifically allocated to the district of Braga, located in the northwest of the country. This code is used for fixed-line (PSTN) services within the region, which includes the city of Braga and its surrounding municipalities.
Geographic Coverage and Administrative Jurisdiction
The area code 257 covers the entire district of Braga, which is part of the Norte region. The district is subdivided into several municipalities, including Braga (the capital), Guimarães, Vila Nova de Famalicão, Barcelos, and Esposende, among others. All fixed-line numbers within these municipalities share the 257 prefix. The region is known for its industrial activity, historical sites, and as a major economic hub in northern Portugal.
Dialing Formats and Caller Instructions
For local callers within Portugal, the number is dialed as 257 XXX XXX (9 digits in total, including the area code). For international callers, the full international format is +351 257 XXX XXX (or 00351 257 XXX XXX when using the international prefix from most countries). The area code is an integral part of the subscriber number and must always be dialed, even for calls within the same local area. This is a standard practice in Portugal, where no trunk prefix (like '0') is used.
Overlay Considerations and Numbering
Currently, there is no overlay code for the 257 area. The numbering capacity is managed by ANACOM, the national regulatory authority. Fixed-line numbers are typically assigned to incumbent operator Altice Portugal (formerly PT Comunicações) and other alternative operators. Subscriber numbers are 6 digits long, resulting in a total of 9 digits for the complete national significant number (NSN).
Practical Examples for Callers
If you are calling a fixed line in Braga from abroad, you would dial, for example, +351 257 123 456. If you are calling from a Portuguese mobile phone, you would dial 257 123 456. Remember to replace the example digits with the actual subscriber number.