Area Code 388 – Kefamenanu/Soe

Geographic Overview

The area code 388 is a geographic National Destination Code (NDC) within the Indonesian numbering plan, allocated to the eastern part of the island of Timor in East Nusa Tenggara province. It serves the towns of Kefamenanu (capital of North Central Timor Regency) and Soe (capital of South Central Timor Regency), along with their surrounding administrative districts. These regencies are located in the Timor highlands, near the border with Timor-Leste.

Dialing Format

When calling a fixed-line subscriber in the Kefamenanu/Soe area from within Indonesia, the trunk prefix 0 is dialed, followed by the area code 388 and the subscriber number. The local subscriber numbers in this region typically consist of 5 to 6 digits, making the total national significant number length (NDC + subscriber number) 8 to 9 digits.

For example, a local number might be 12345. To call it from another Indonesian city, you would dial: 0 388 12345.

From outside Indonesia, you would dial your international access code (e.g., 00 from most countries, or +), followed by Indonesia's country code 62, then the area code 388 (without the leading 0), and finally the subscriber number. For the same example, you would dial: +62 388 12345.

Caller Instructions

• Local callers within the Kefamenanu/Soe area may be able to dial the subscriber number directly without the area code, depending on the local network configuration. However, for clarity and to ensure successful routing, it is recommended to always include the area code.
• Domestic long-distance callers from other parts of Indonesia must dial the trunk prefix 0, then the area code 388, followed by the subscriber number.
• International callers must use the plus sign (+) or their country's international exit code, then 62 (Indonesia's country code), then 388, and the subscriber number. Do not include the leading '0' of the trunk prefix.

Overlay and Numbering Considerations

As of the latest ITU-T and national regulatory updates, there is no overlay code for the 388 area. The numbering area is served exclusively by the 388 NDC. However, with the ongoing migration toward IP-based networks, some fixed-line numbers may be routed over VoIP infrastructure, but the geographic significance of the code remains unchanged for routing purposes.

It is important to note that the area code 388 is distinct from the mobile prefixes used in Indonesia, which are non-geographic and start with 8 (e.g., 0811, 0821, etc.). Fixed-line numbers under 388 are associated with physical locations and are subject to geographic tariffing.