Area Code 40 – Aranuka

Overview of Kiribati Area Code 40

Area code 40 is a geographic National Destination Code (NDC) assigned to the island of Aranuka, part of the Gilbert Islands group in the Republic of Kiribati. Within the national numbering plan, this code routes calls to fixed-line subscribers on Aranuka, one of the country's smaller inhabited atolls. The code is used for both local and international dialing when reaching landline numbers on the island.

Geographic Coverage and Administration

Aranuka is an atoll located approximately 30 kilometers north of the equator in the central Pacific Ocean. Administratively, it falls under the Gilbert Islands district, with the main village of Takaeang serving as the primary settlement. The island's telecommunications infrastructure is managed by the state-owned operator, Telecom Services Kiribati Limited (TSKL), which provides PSTN services to residential and business customers. Due to the small population and limited fixed-line penetration, the number of active landlines under this code is modest, but the code remains essential for government offices, local businesses, and community services.

Dialing Formats and Procedures

For callers within Kiribati, the national significant number (NSN) for Aranuka numbers is 8 digits long, beginning with the area code 40. To place a local call from another island or region in Kiribati, dial the full NSN: 40 XXX XXX. For example, a local call to a subscriber on Aranuka would be dialed as 40 123 456.

For international callers, the Kiribati country code +686 must be used, followed by the NSN without the leading trunk prefix (if any). The international format is +686 40 XXX XXX. For instance, a caller from overseas would dial +686 40 123 456 to reach a fixed line on Aranuka. Note that Kiribati uses a single international prefix (00) for outgoing calls, but this does not affect incoming international dialing.

Overlays and Numbering Considerations

Currently, there are no overlay codes or area code changes planned for Aranuka. The geographic code 40 is dedicated solely to this island, ensuring unambiguous routing. As with all geographic codes in Kiribati, the code is not portable; it remains tied to the physical location of the line. Callers should be aware that due to the remote nature of the island, occasional service disruptions may occur, but standard PSTN reliability is maintained by TSKL.

Instructions for Callers

• Local callers (within Kiribati): Dial the 8-digit national number: 40 XXX XXX.
• International callers: Dial your country's exit code, then 686, then the 8-digit national number: +686 40 XXX XXX.
• Emergency and special services: Always use the national emergency numbers (e.g., 999 for police) rather than the geographic code.

For accurate billing and routing, ensure you have the correct number of digits. The Kiribati numbering plan follows ITU-T E.164, and the total length of an international number is 11 digits (including the country code).