Area Code 79 – Ariana/Ben Arous/Manouba/Tunis

Geographic Coverage and Administrative Scope

The Tunisian national destination code 79 is a geographic area code assigned to the northern governorates of Ariana, Ben Arous, Manouba, and Tunis. These four governorates form the Greater Tunis metropolitan area, the political, economic, and cultural heart of Tunisia. The code covers the capital city of Tunis and its densely populated suburbs, including key municipalities such as La Marsa, Carthage, Le Bardo, and La Soukra. As a geographic prefix, 79 identifies fixed-line telephone numbers within this specific administrative region, distinguishing them from other Tunisian area codes like 71 (also serving Tunis) or 73 (serving Sousse).

Dialing Formats and Number Structure

When dialing a fixed-line number in the 79 region from within Tunisia, subscribers must use the national trunk prefix 0 followed by the area code and the subscriber's seven-digit number. For example, a local call to a number in Ariana would be dialed as 079 123 456. However, callers from outside Tunisia must replace the leading zero with the international access code and Tunisia's country calling code +216, resulting in the format +216 79 123 456. It is important to note that Tunisia uses a closed numbering plan for international calls; the international format omits the trunk prefix entirely. The total length of a Tunisian geographic number, including the area code but excluding the country code, is eight digits.

Overlay and Numbering Considerations

The 79 code operates in parallel with the older 71 code, which historically served the same Greater Tunis region. This overlay situation means that both codes may be active within the same geographic area, and subscribers may have numbers under either prefix depending on the allocation date and the operator's infrastructure. For callers, this implies that dialing the correct area code is essential to reach the intended party. No additional digit is required for local calls between different area codes within Tunisia; the trunk prefix 0 is always used before the area code. As of the latest ITU-T E.164 guidelines, Tunisia has not implemented any overlay changes that would require ten-digit dialing; the standard eight-digit national significant number remains in effect.

Practical Guidance for Callers

For local callers within the 79 region, dialing the seven-digit subscriber number alone is not sufficient; the area code must be included even for calls within the same governorate. This is a common practice in many countries to ensure routing efficiency. For international callers, the complete sequence is +216 79 123 456. When calling from a mobile phone, the same international format applies. It is also worth noting that Tunisian fixed-line numbers are primarily used for PSTN and VoIP services, and they are not portable to mobile networks. Therefore, a number starting with 79 will always be a fixed-line service in the Greater Tunis area, regardless of the operator providing the service.