Area Code 517 – Kandangan/Barabai/Rantau/Negara

Overview of Area Code 517 (Indonesia)

Area code 517 is a geographic National Destination Code (NDC) within the Indonesian public switched telephone network (PSTN), allocated under the international country calling code +62. It serves the southern and central portions of South Kalimantan Province (Kalimantan Selatan) on the island of Borneo. Specifically, the code covers the regencies of Hulu Sungai Selatan, Hulu Sungai Tengah, and Hulu Sungai Utara, along with the city of Banjarbaru (partially) and the surrounding districts. The principal towns within this numbering area include Kandangan (capital of Hulu Sungai Selatan), Barabai (capital of Hulu Sungai Tengah), Rantau (capital of Tapin Regency), and Negara (a district in Hulu Sungai Selatan).

Geographic Coverage and Administrative Jurisdiction

The 517 area code is administered by the Indonesian Telecommunication Regulatory Authority (BRTI) and is assigned to fixed-line operators such as Telkom Indonesia. It is a geographic code, meaning that the tariff and routing are based on the physical location of the subscriber. The coverage area is predominantly rural and agricultural, with the largest urban center being Kandangan, followed by Barabai and Rantau. These towns serve as local administrative and commercial hubs for the surrounding regencies.

Dialing Formats

For local calls within the same area code (i.e., within the 517 region), callers typically dial only the subscriber number, which can vary in length from 5 to 7 digits depending on the specific exchange and historical numbering capacity. However, the most common format is a 7-digit subscriber number, making the complete national significant number (NSN) 10 digits when including the area code (0+517+XXXXXXX).

For calls from other parts of Indonesia, the trunk prefix 0 is used, followed by the area code and the subscriber number: 0 517 XXX XXXX. For international callers, the Indonesian country code +62 is used, and the trunk prefix is omitted: +62 517 XXX XXXX. It is important to note that the leading zero is not dialed when calling from abroad.

Overlay and Numbering Considerations

As of the latest numbering plan updates, there is no overlay code for the 517 area. The code is exclusive to the fixed-line network in this region. However, due to the increasing demand for telecommunication services, the regulator may introduce additional numbering capacity in the future. Subscribers in this area may also have access to VoIP and mobile services, but those are assigned separate non-geographic codes.

Caller Instructions

For local callers within the 517 area: dial the subscriber number directly (without the area code) for calls within the same exchange or local calling area. For calls to other area codes within Indonesia, dial 0, then the area code, then the subscriber number. For international callers: dial your country's exit code (e.g., 00 or 011), followed by 62, then the area code without the leading zero, and the subscriber number. For example, to call a fixed line in Kandangan with the number 123 4567, you would dial +62 517 123 4567 from abroad.