Area Code 31 – Muʻa
The phone area code for Muʻa is 31 (international format +67631). Browse local exchange codes (NXX) and carrier assignments below.
📍 Geographic Location of Muʻa
Overview of Tonga's +676 31 Geographic Prefix
The +676 31 prefix is a geographic National Destination Code (NDC) assigned to the Muʻa area on Tongatapu, the main island of the Kingdom of Tonga. Muʻa is a historic and administrative district located on the eastern side of Tongatapu, approximately 12 kilometers from the capital, Nukuʻalofa. This prefix is used for fixed-line PSTN services within the Muʻa exchange area, which encompasses the town center and surrounding villages, including Lapaha, Talasiu, and Hoi.
Dialing Formats and Usage
For callers within Tonga, the national significant number (NSN) for Muʻa numbers is seven digits, beginning with the trunk prefix '31'. To place a local call from another part of Tonga, you would dial 31XXXXX (where XXXXX represents the five-digit subscriber number). For example, a local call to a Muʻa number would be dialed as 31 12345.
For international callers, the full E.164 format must be used: +676 31 12345. This includes the country code +676, the area code 31, and the five-digit local subscriber number. When calling from a mobile phone, the plus sign (+) is typically used to denote the international access code, but you may also dial the international access code (e.g., 00) followed by 676 31 12345, depending on your country's dialing conventions.
Geographic and Regulatory Context
As a geographic number, +676 31 is tied to the physical location of the line. This means that the number is not portable outside the Muʻa exchange area, and it is primarily used for fixed-line services, including residential and business landlines. The Tonga Communications Corporation (TCC) is the primary provider of fixed-line services in this region, and it operates under the regulatory oversight of the Tonga Telecommunications Commission (TTC).
For businesses in Muʻa, having a local geographic number can enhance local presence and trust. However, with the rise of VoIP and mobile services, many businesses are also adopting non-geographic numbers for flexibility. Nonetheless, the +676 31 prefix remains a reliable and recognized identifier for the Muʻa district.
When dialing from abroad, it is important to note that Tonga uses a single country code (+676) for all services, and there are no separate trunk prefixes for domestic long-distance calls. The national numbering plan follows ITU-T E.164 recommendations, ensuring global interoperability.
In summary, the +676 31 prefix is a geographic code serving the Muʻa area of Tongatapu. Whether you are a local resident, a business, or an international caller, understanding the correct dialing format is essential for successful communication.