Area Code 542 – Balikpapan

Geographic Overview

The +62 542 country/area code corresponds to the city of Balikpapan, a major seaport and industrial hub located in the province of East Kalimantan (Kalimantan Timur), Indonesia. Balikpapan is situated on the eastern coast of Borneo and serves as a primary gateway to the region's oil, gas, and mining industries. The code covers the administrative city of Balikpapan and its immediate surroundings, including the districts of East Balikpapan, West Balikpapan, North Balikpapan, and South Balikpapan. As a geographic code, it is assigned to fixed-line (PSTN) services within this specific area.

Dialing Format

To call a Balikpapan fixed-line number from within Indonesia, you must dial the trunk prefix 0, followed by the area code 542, and then the subscriber number. The subscriber number typically consists of 6 to 7 digits, making the total national significant number (NSN) length 9 or 10 digits (excluding the trunk prefix). For example, a local number might be 123456. From within Indonesia, you would dial: 0542 123456.

For international callers, you must replace the trunk prefix with the Indonesian country code +62. Thus, the same number would be dialed as +62 542 123456. Note that the leading 0 is omitted when using the international format.

Local and International Calling Instructions

• Local calls within Balikpapan: If you are calling from another fixed-line number within the same area code, you may be able to dial only the subscriber number (without the area code), depending on your service provider. However, for clarity and consistency, it is recommended to always use the full national format.
• National calls from other Indonesian cities: Dial 0542 followed by the subscriber number. For example, from Jakarta, you would dial 0542 123456.
• International calls from abroad: Dial your country's international access code (e.g., 011 from the US, 00 from most European countries), then 62, then 542, and the subscriber number. For instance, from the US, you would dial 011 62 542 123456.

Overlay and Numbering Considerations

As of the latest ITU-T E.164 allocation, there is no overlay code for Balikpapan; the area code 542 remains exclusive to this geographic region. However, due to the growth of VoIP and mobile services, some numbers may be routed over IP networks, but the dialing format remains unchanged. Always verify the subscriber number length, as it may vary. For international callers, it is crucial to omit the leading '0' of the area code when dialing from abroad.