Area Code 40 – Kolovai

Overview of Tonga's +676 40 Geographic Code

The +676 40 prefix is a geographic National Destination Code (NDC) assigned to the Kolovai area, located on the main island of Tongatapu in the Kingdom of Tonga. Kolovai is a historic village on the western side of Tongatapu, known for its flying foxes and proximity to the royal residence. This code is part of Tonga's national numbering plan, which adheres to ITU-T E.164 recommendations. Calls to +676 40 are routed over the PSTN to fixed-line subscribers within the Kolovai exchange area.

Dialing Formats and Instructions

For local callers within Tonga, dial the seven-digit national number, which includes the NDC '40' followed by a five-digit subscriber number (e.g., 40 XXX XX). For international callers, dial the international access prefix (e.g., 00 or + from mobile), followed by Tonga's country code 676, then the NDC and subscriber number: +676 40 XXX XX. For example, to call a fixed line in Kolovai from abroad, you would dial +676 40 12345 (where 12345 is the subscriber number).

Geographic Coverage and Administrative Jurisdiction

The Kolovai exchange serves the village of Kolovai and its immediate surroundings, including the western district of Tongatapu. This area falls under the administrative jurisdiction of the Tongatapu Island Council. While Kolovai is not a major urban center, it holds cultural significance and is home to several government and community facilities. The geographic nature of the code means that the number is tied to a physical location, and calls are terminated via fixed-line infrastructure.

Overlay and Numbering Considerations

Tonga does not currently have overlay codes for geographic areas; each NDC corresponds to a specific exchange. However, number portability may allow subscribers to retain their numbers when moving within the same service area, though porting between geographic and mobile networks is limited. For callers, it is important to note that while geographic codes are location-specific, VoIP services may allow users to obtain numbers with this prefix for virtual presence, but such services are subject to national regulations.

Practical Guidance for Callers

When calling a Kolovai number from overseas, always use the full international format +676 40 XXX XX. If you are within Tonga, you can dial the national format (40 XXX XX) without the country code. Be aware that international call charges apply when dialing from abroad, and local calls within Tonga are typically charged at domestic rates. For businesses or individuals seeking a presence in Kolovai, acquiring a local number with this prefix can enhance local credibility and accessibility.