Area Code 327 – Kangean/Masalembu

Overview of Area Code 327 (Kangean/Masalembu)

Area code 327 is a geographic National Destination Code (NDC) assigned to the Kangean and Masalembu island groups, part of East Java province, Indonesia. These remote archipelagos are located in the Java Sea, north of Bali and south of Borneo. The code serves the administrative districts of Kangean (Sumenep Regency) and Masalembu, providing PSTN and mobile fixed-wireless services to local residents and businesses.

Geographic Coverage and Administrative Jurisdiction

The 327 area code covers the Kangean Islands (Kepulauan Kangean) and Masalembu Islands (Kepulauan Masalembu). Kangean is the largest island in the group, with its main town being Arjasa. Masalembu is a smaller island cluster to the west. Both are administratively part of Sumenep Regency, which is itself part of the Madura region of East Java. Despite being geographically isolated, these islands are connected to the national telecommunications network via satellite and submarine cable links.

Dialing Formats and Usage

To call a fixed line in Kangean or Masalembu from within Indonesia, you must use the trunk prefix 0 followed by the area code and the subscriber number. The national format is:

• 0 327 XXX XXXX (where X represents the 7-digit local subscriber number)

From outside Indonesia, callers must use the international access code (typically 00 or +), followed by Indonesia's country code 62, then the area code without the leading zero, and the subscriber number:

• +62 327 XXX XXXX

For example, a local call to a number in Arjasa might be dialed as 0327 123 4567, while an international caller would dial +62 327 123 4567.

Overlay and Numbering Considerations

Currently, there is no overlay code for 327; it remains the sole geographic code for the Kangean and Masalembu areas. However, as with all Indonesian fixed-line codes, the number of digits can vary, and it is essential to confirm the exact subscriber number length with the local telecom provider. Mobile services in these islands use the non-geographic mobile prefixes (e.g., 0811, 0821, etc.) and are not affected by this area code.

Caller Instructions

For local callers within the 327 area, it is possible to dial the subscriber number directly without the area code, depending on the local network configuration. However, for clarity and reliability, it is recommended to always use the full national format. For international callers, ensure you have the correct country code and drop the leading zero of the area code. Be mindful of time zone differences (Indonesia Western Time, UTC+7) when placing calls.