Area Code 451 – Palu

Overview of Area Code +62 451

Area code 451 is the National Destination Code (NDC) for the city of Palu, the capital of Central Sulawesi Province, Indonesia. Geographically, this code covers the city of Palu and its immediate surrounding areas, including the districts of Palu Barat, Palu Timur, Palu Selatan, and Palu Utara. The region is served by both fixed-line PSTN and VoIP services, with numbers typically consisting of 7 to 8 digits after the area code.

Dialing Formats

When calling a Palu fixed-line number from within Indonesia (outside the local area), you must dial the trunk prefix 0, followed by the area code 451, and then the subscriber number. For example, if the local number is 123456, you would dial 0451 123456 from other parts of Indonesia. From abroad, you would dial the international access code (e.g., 00 or +), followed by Indonesia's country code 62, then the area code without the leading zero, and the subscriber number: +62 451 123456. Within Palu itself, local calls can be made using only the 6- or 7-digit subscriber number, depending on the local numbering plan.

Administrative and Geographic Coverage

Palu is the administrative center of Central Sulawesi Province and serves as a major economic hub for the region. The area code 451 is exclusively assigned to the city of Palu and its immediate environs; neighboring regencies such as Donggala, Sigi, and Parigi Moutong use different area codes (e.g., 450 for Donggala and parts of Sigi). This clear geographic separation ensures efficient call routing and numbering resource management.

Overlay and Numbering Considerations

Currently, there is no overlay code for Palu; the 451 code remains the sole geographic code for the city. However, as demand for fixed-line services grows, the Indonesian Telecommunication Regulatory Authority (BRTI) may introduce additional digits or overlay codes in the future. For now, callers should always use the 0 prefix when dialing from outside the local area, and the +62 prefix when dialing from abroad.

Caller Instructions

• Local callers (within Palu): Dial the subscriber number directly (e.g., 123456).
• National callers (outside Palu): Dial 0451 followed by the subscriber number (e.g., 0451 123456).
• International callers: Dial your country's exit code, then 62 451, then the subscriber number (e.g., +62 451 123456).

Always verify the current number length, as it may vary between 6 and 8 digits. For the most accurate and up-to-date numbering information, consult official BRTI resources or your telecom provider.