Area Code 554 – Tanjung Redeb

Overview of Area Code +62 554

Area code 554 is a geographic National Destination Code (NDC) within the Indonesian national numbering plan, assigned to the region of Tanjung Redeb, the capital of Berau Regency in East Kalimantan Province, Borneo. This code serves the administrative and commercial hub of Berau, including the surrounding districts and towns that rely on Tanjung Redeb as their primary economic center. The area is known for its proximity to natural attractions such as Derawan Islands and the Kelay River, but the telecommunication infrastructure follows standard PSTN and VoIP standards.

Geographic Coverage and Jurisdiction

The +62 554 code covers the city of Tanjung Redeb and its immediate metropolitan area, which includes several kecamatan (districts) within Berau Regency. Key locations served include Gunung Tabur, Teluk Bayur, and parts of Sambaliung. The jurisdiction falls under the Indonesian Ministry of Communication and Informatics (Kominfo) and is administered by the local fixed-line operator, primarily Telkom Indonesia, which provides landline services in the region.

Dialing Formats and Instructions

For callers within Indonesia, dialing a fixed-line number in Tanjung Redeb requires the trunk prefix 0 followed by the area code 554 and the subscriber number. The subscriber number length in this region typically ranges from 5 to 7 digits, resulting in a total national significant number (NSN) of 8 to 10 digits when including the NDC. For example, a local number might be 554 12345 (7 digits after the area code). To call from abroad, international callers must use the Indonesian country code +62, then the area code without the leading trunk prefix, followed by the subscriber number. For instance, to call a number in Tanjung Redeb from the United States, one would dial: 011 62 554 12345 (or +62 554 12345 from a mobile phone).

Overlay and Numbering Considerations

As of the latest ITU-T E.164 national numbering plan updates, there is no overlay code for the 554 area. The code is exclusively geographic, meaning that the tariff and routing are based on the physical location of the line. However, with the rise of VoIP and fixed-wireless access, some numbers may be routed over IP networks, but the dialing format remains unchanged. Callers should note that when dialing from a mobile phone within Indonesia, it is common to include the area code even for local calls, as mobile networks do not automatically add the trunk prefix.

Practical Guidance for Callers

For local callers within Tanjung Redeb, it is possible to dial the subscriber number directly without the area code if the call is within the same exchange, but for clarity and to avoid misdialing, it is recommended to always use the full national format. For international callers, it is essential to replace the leading zero of the area code with the country code. For example, a call from Australia to a Tanjung Redeb number would be dialed as 0011 62 554 12345. Always verify the subscriber number length, as it can vary; if the number has fewer digits, it may be an older line or a different service.