Area Code 957 – Kaimana

Overview of Area Code 957 (Kaimana)

Area code 957 is a geographic National Destination Code (NDC) assigned to the Kaimana Regency, located in the province of West Papua, Indonesia. This code is part of the Indonesian national numbering plan, which follows the ITU-T E.164 standard. The Kaimana region is situated on the western coast of the Bird's Head Peninsula, and its administrative center is the town of Kaimana. The area is known for its remote coastal communities and is served by a mix of PSTN (fixed-line) and mobile services, though fixed-line penetration is relatively low.

Geographic Coverage and Jurisdiction

The 957 area code covers the entire Kaimana Regency, including the districts of Kaimana, Buruway, Teluk Arguni Atas, and Teluk Etna, among others. The code is administered under the Indonesian telecommunications regulatory framework, with numbering resources allocated by the Ministry of Communication and Information Technology. Due to the region's topography and dispersed population, fixed-line services are often limited to the main town and nearby settlements, while mobile networks provide broader coverage.

Dialing Formats and Instructions

For callers within Indonesia, dialing a fixed-line number in Kaimana requires the trunk prefix 0, followed by the area code 957 and the subscriber number. The subscriber number length varies, typically between 5 and 7 digits, resulting in a total national significant number (NSN) of 8 to 10 digits (excluding the trunk prefix). An example of a local call format is: 0 957 XXX XXXX.

For international callers, the Indonesian country code +62 is used, followed by the area code without the leading trunk prefix. Thus, an international call to Kaimana would be dialed as: +62 957 XXX XXXX. For example, if the local number is 0 957 123 456, the international format would be +62 957 123 456.

Overlay and Numbering Considerations

As of the latest available data, there is no overlay code for the 957 area code, meaning that the area code is unique to Kaimana. However, due to the increasing demand for telecommunication services, the Indonesian numbering plan may introduce additional digits or overlay codes in the future. Callers should always verify the current dialing procedures with their service provider if they encounter issues.

Practical Advice for Callers

When calling Kaimana from abroad, ensure you have the correct international access prefix for your country (e.g., 011 from the US, 00 from most European countries). Also, be mindful of time zone differences: Kaimana is in Indonesia Eastern Time (WIT, UTC+9). For local callers, note that calls to mobile numbers within Kaimana may require different dialing procedures, as mobile numbers are not tied to geographic area codes.