Area Code 452 – Poso

Geographic Overview

The area code 452 is a geographic National Destination Code (NDC) assigned to the Poso region in Central Sulawesi, Indonesia. This code is part of the national numbering plan administered under ITU-T E.164 guidelines. Poso is the administrative capital of the Poso Regency, situated on the eastern coast of Central Sulawesi. The code covers the city of Poso and its surrounding districts, including Tentena, a popular gateway to Lake Poso and the Lore Lindu National Park.

Dialing Formats

For callers within Indonesia, the trunk prefix 0 is used before the area code. The local number typically consists of 6 to 7 digits, resulting in a total subscriber number length of 8 to 9 digits when including the area code. The national dialing format is:

0 452 XXXX XXX (for a 7-digit local number)

For international callers, the country code +62 replaces the trunk prefix, and the leading 0 is omitted. The international dialing format is:

+62 452 XXXX XXX

For example, to call a fixed line in Poso with the local number 123 4567, a caller from abroad would dial +62 452 123 4567. A caller from Jakarta would dial 0 452 123 4567.

Geographic Coverage and Administration

The 452 area code is allocated to the Poso Regency, which is part of the province of Central Sulawesi (Sulawesi Tengah). The region is characterized by a mix of urban and rural areas, with telecommunications services provided by both incumbent operators and regional carriers. The code is used exclusively for fixed-line PSTN services, including traditional copper lines and, in some areas, fixed wireless access (FWA) services that operate under a geographic allocation.

Overlay and Numbering Considerations

As of the latest ITU-T national numbering plan updates, there is no overlay code for the Poso area. The 452 code is unique to this region, and no other geographic areas share this code. However, due to the increasing demand for telecommunication services, the national regulatory authority (Badan Regulasi Telekomunikasi Indonesia) may introduce additional digit requirements in the future. It is always advisable to verify the current numbering plan when integrating telecom services.

Caller Instructions

For local callers within the Poso area, it is possible to dial the subscriber number directly without the area code, depending on the operator's local dialing rules. However, for calls from outside the area code, the trunk prefix and area code are mandatory. For international callers, it is crucial to use the correct country code and omit the leading zero. Additionally, when calling from mobile networks, the same international format applies, ensuring seamless connectivity.