Area Code 75 – Vava’u

Overview of Tonga's +676 75 Geographic Prefix

The international dialing code +676 is assigned to the Kingdom of Tonga under the ITU-T E.164 international numbering plan. Within this national plan, the prefix 75 is designated as a geographic area code for the Vava’u island group. Vava’u is one of Tonga’s five main island divisions, located in the northern part of the archipelago. The prefix is used for fixed-line telephone services (PSTN) within the Vava’u region, which includes the main island of Vava’u (also called ‘Utu Vava’u) and surrounding islets.

When dialing a Vava’u fixed-line number from abroad, callers must use the full international format: +676 75X XXXX (where X represents the subscriber digits). For example, a typical Vava’u number might be +676 75 12345. Note that Tonga uses a seven-digit national significant number (NSN) for fixed-line services, with the first two digits (75) serving as the National Destination Code (NDC) for Vava’u. The remaining five digits are the local subscriber number.

Within Tonga, callers dial the seven-digit number directly, omitting the international prefix and country code. For instance, a local call to the same number would be dialed as 75 12345. This applies to calls from other islands, such as Tongatapu (the main island) or Ha’apai, as well as from within Vava’u itself.

Geographic coverage of the 75 prefix includes the administrative center of Neiafu, the second-largest town in Tonga, and other villages on the island. The Vava’u group is known for its natural harbors and tourism, so many hotels, guesthouses, and local businesses rely on these fixed lines for communication.

As with many island nations, Tonga has implemented number portability for mobile services, but fixed-line geographic numbers are generally tied to the physical location of the line. Overlay codes are not currently in use for Vava’u; the 75 prefix is the sole geographic code for the region.

For international callers, it is important to note that Tonga’s country code +676 is also used for mobile numbers, which typically begin with prefixes such as 70, 71, 72, 73, 74, 76, 77, 78, or 79. Therefore, the 75 prefix unambiguously identifies a fixed-line subscriber in Vava’u. When dialing from a foreign country, always replace the leading zero (if present) with the +676 country code. For example, if a local number is listed as 075 12345, the international format is +676 75 12345.

Understanding the correct dialing format ensures reliable connectivity to businesses and residents in Vava’u, whether for personal calls, tourism bookings, or commercial purposes.