Area Code 31 – Las Tunas Province

Overview of Cuba's +53 31 Geographic Area Code

The +53 31 area code is the national destination code assigned to the Las Tunas Province in eastern Cuba. This geographic code is part of Cuba's public switched telephone network (PSTN) and is used for fixed-line services within the province. Las Tunas is one of Cuba's 15 provinces and is known for its agricultural production and growing urban centers. The province's capital, Victoria de Las Tunas, is the primary city served by this code, along with other municipalities such as Puerto Padre, Amancio, and Colombia.

Geographic Coverage and Administrative Jurisdiction

The +53 31 code covers the entire province of Las Tunas, which is bordered by Holguín to the north and east, Granma to the west, and the Caribbean Sea to the south. The province is divided into eight municipalities, each with local telephone exchanges that fall under the +53 31 prefix. Fixed-line numbers in this region are typically seven digits long, and when dialed domestically, the trunk prefix '0' is used before the area code (e.g., 0 31 XXX XXXX). Internationally, callers must dial the full E.164 format: +53 31 XXX XXXX.

Dialing Formats and Caller Instructions

For local callers within Cuba, dialing a Las Tunas number requires the trunk prefix '0' followed by the area code and the seven-digit subscriber number. For example, to call a fixed line in Victoria de Las Tunas, a caller in Havana would dial 0 31 XXX XXXX. For international callers, the process is to dial the international access prefix (e.g., 00 or +) followed by Cuba's country code 53, then the area code 31 and the subscriber number. For instance, a caller from the United States would dial 011 53 31 XXX XXXX or simply +53 31 XXX XXXX from a mobile phone.

Overlay Considerations and Numbering Plan

As of the latest ITU-T E.164 numbering plan updates, Cuba has not introduced overlay codes for Las Tunas; the +53 31 code remains exclusive to this province. However, with the ongoing modernization of Cuba's telecommunications infrastructure, including the expansion of NGN (Next Generation Networks) and VoIP services, there is a possibility of future numbering changes. Users should always verify the current dialing procedures with their service provider, especially when calling from VoIP or mobile networks, as some operators may require different access codes.

Practical Examples for Callers

• Local call (within Cuba): 0 31 345 6789
• International call (from abroad): +53 31 345 6789
• From a Cuban mobile phone: +53 31 345 6789 (or 031 345 6789 depending on the carrier)

Understanding the correct dialing format ensures successful connectivity to businesses, government offices, and residents in Las Tunas Province. For the most accurate and up-to-date information, always consult your telecom provider or the official Cuban telecommunications authority (ETECSA).