Area Code 458 – Tentena

Geographic Overview

The +62 458 country and area code combination is assigned to Tentena, a town located in the Poso Regency of Central Sulawesi, Indonesia. This geographic prefix is part of the national numbering plan administered by the Indonesian Telecommunication Regulatory Authority (BRTI) under the ITU-T E.164 standard. Tentena sits on the shores of Lake Poso and serves as a commercial and administrative hub for the surrounding highland region. The area code covers the town itself and several nearby villages within the Poso Regency, including areas along the Poso River and the lake's eastern shore.

Dialing Formats

When calling a fixed-line number in Tentena from within Indonesia, subscribers must dial the trunk prefix 0, followed by the area code 458, and then the subscriber's 5- to 7-digit local number. For example, a local number 12345 would be dialed as 0458 12345 from elsewhere in the country. From outside Indonesia, callers must use the international access prefix (typically 00 or +), the country code 62, the area code 458 (without the leading 0), and the local number. Thus, the same number would be dialed as +62 458 12345 internationally.

Local vs. International Calling Instructions

For local callers within the Tentena area, it is possible to dial just the local subscriber number without the area code, depending on the specific carrier's local dialing rules. However, for clarity and to avoid misdialing, it is recommended to always include the area code, especially when calling from mobile phones. Foreign callers should note that Indonesia uses an open dialing plan, so the leading 0 is only used domestically. When saving contacts on a mobile phone, it is best practice to store the number in international format (+62 458...) to ensure proper routing when roaming or calling from abroad.

Network and Coverage

Fixed-line services in Tentena are primarily provided by PT Telkom Indonesia, the national incumbent operator, using both copper and fiber-optic infrastructure. In recent years, there has been an expansion of fiber-to-the-home (FTTH) services, improving broadband connectivity. However, due to the region's mountainous terrain, some remote villages may experience limited fixed-line availability, and residents often rely on mobile networks for voice and data services. The area code 458 is exclusively allocated to geographic fixed-line services; mobile numbers in the same region use different prefixes (e.g., 0811, 0821, etc.) and are not tied to this code.

Numbering Plan Considerations

As of the current ITU-T E.164 allocation, there are no overlay codes for Tentena, meaning the 458 code is unique to this geographic area. The Indonesian numbering plan has not yet introduced area code overlays, and all geographic codes remain distinct. When dialing from abroad, callers should be aware that some Indonesian mobile numbers may be ported, but fixed-line numbers are generally not portable across different geographic areas. For businesses or individuals requiring a presence in Tentena, obtaining a local fixed-line number with the 458 code can enhance local trust and accessibility.