Area Code 372 – Alas/Taliwang

Geographic Coverage and Administrative Jurisdiction

The area code 372 is a geographic National Destination Code (NDC) assigned to the western part of Sumbawa Island in West Nusa Tenggara Province, Indonesia. It serves the administrative regions of Sumbawa Regency (including the capital Sumbawa Besar) and West Sumbawa Regency. The code covers the towns of Alas, Taliwang, and surrounding districts. This region is distinct from the eastern part of Sumbawa Island, which uses area code 371 (Bima).

Dialing Formats

For local calls within the 372 area, subscribers dial the 7-digit subscriber number directly, omitting the trunk prefix and area code. For calls from outside the area but still within Indonesia, callers must dial the trunk prefix 0, followed by the area code 372, and then the 7-digit subscriber number. The complete national format is 0-372-XXXXXXX.

For international callers, the Indonesia country code +62 replaces the leading zero. The international dialing format is +62-372-XXXXXXX. For example, a local number in Taliwang might be dialed as 0-372-1234567 domestically, or +62-372-1234567 from abroad.

Numbering and Overlay Considerations

Subscriber numbers in the 372 area are 7 digits long, resulting in a total national significant number length of 10 digits (including the leading 0). Currently, there are no overlay codes or 10-digit dialing requirements within this region; local calls use 7-digit dialing. However, as demand for numbers grows, future overlays may be introduced, which would require 10-digit dialing for all local calls. Subscribers should stay informed about any regulatory changes from the Indonesian Telecommunication Regulatory Authority (BRTI).

Caller Instructions

For local callers within the Alas/Taliwang area: simply dial the 7-digit subscriber number. For callers from other parts of Indonesia (e.g., from Jakarta): dial 0-372-XXXXXXX. For international callers: dial your country's exit code (e.g., 00 from many countries, 011 from the US), then 62, then 372, and the 7-digit subscriber number. Always omit the leading zero when dialing internationally.

Network and Service Providers

Fixed-line services in this region are primarily provided by Telkom Indonesia, the incumbent operator. Some alternative operators may also offer services using this code. Mobile services are not tied to geographic codes; they use their own prefixes (e.g., 0811, 0812, etc.). Therefore, when calling a mobile phone in the Alas/Taliwang area, you must dial the mobile prefix, not 372.