Area Code 315 – Minas Gerais

Overview of Area Code 315

Area code 315 is a geographic National Destination Code (NDC) within the Brazilian telephone numbering plan, assigned to the central-southern region of the state of Minas Gerais. It covers a significant portion of the state, including the historical and economic hub of Ouro Preto, the regional center of Juiz de Fora, and numerous smaller municipalities. The code is administered under the oversight of ANATEL (Agência Nacional de Telecomunicações), Brazil's telecommunications regulatory authority.

Geographic Coverage and Major Cities

The 315 area code serves a diverse mix of urban and rural areas. Key cities and municipalities within this code include:

• Juiz de Fora – one of the largest cities in Minas Gerais, known for its industrial and educational significance.
• Ouro Preto – a UNESCO World Heritage site, famous for its colonial architecture and tourism.
• Barbacena, Ubá, Viçosa, and Ponte Nova – important regional centers.

This area code is distinct from other Minas Gerais codes such as 31 (Belo Horizonte metropolitan area), 32 (Zona da Mata), and 35 (southern Minas Gerais).

Dialing Formats

Understanding the correct dialing procedure is crucial for both domestic and international callers.

• Local Calls (within the same area code): Dial only the 8-digit subscriber number. For example, to call a landline in Juiz de Fora, dial 1234-5678.
• Domestic Long-Distance (from other Brazilian area codes): Dial 0 + carrier code (e.g., 15, 21, 31) + 31 + the 8-digit number. Example: 0 15 31 1234-5678.
• International Calls (from outside Brazil): Dial your country's exit code (e.g., 011 from the US, 00 from many European countries) + Brazil's country code 55 + area code 31 + the 8-digit number. Example: 011 55 31 1234-5678.

Note that mobile numbers in Brazil have 9 digits (starting with 9) and are also within the 31 area code. For mobile calls, the same dialing rules apply, but the subscriber number is 9 digits long. For example, a mobile in Juiz de Fora might be 9 8765-4321.

Overlay and Regulatory Considerations

As of the latest ANATEL updates, there is no overlay code for the 315 region; the area code remains exclusive to its geographic area. However, number portability is available, allowing users to retain their numbers when changing service providers within the same area code. For callers, this means that the area code does not necessarily indicate the physical location of the line, but it remains tied to the original geographic allocation.

For businesses and individuals, understanding the correct dialing format is essential for ensuring connectivity. When in doubt, always verify the number length and include the appropriate trunk prefix and carrier code as required.