Area Code 538 – Kuala Pembuang

Geographic Overview

The +62 538 country and area code combination routes calls to the fixed-line telephone network of Kuala Pembuang, the administrative capital of Seruyan Regency in Central Kalimantan (Kalimantan Tengah), Indonesia. This geographic code is assigned under the Indonesian national numbering plan, which follows ITU-T E.164 recommendations. Kuala Pembuang is situated on the southern coast of Borneo, along the Seruyan River, and serves as a hub for local government and trade. The area code 538 covers the Seruyan Regency, including the town of Kuala Pembuang and its surrounding districts, such as Seruyan Hilir, Seruyan Tengah, and Seruyan Hulu.

Dialing Formats

When calling a fixed-line number in Kuala Pembuang from within Indonesia, subscribers must dial the trunk prefix '0' followed by the area code '538' and the subscriber's 6- to 7-digit local number. For example, a local number might be formatted as (0538) XXXXXX. From outside Indonesia, callers should use the international access prefix (typically '00' or '+'), followed by Indonesia's country code '62', the area code without the leading '0' (i.e., '538'), and the local subscriber number. For instance, to call a Kuala Pembuang number 123456 from the United States, you would dial 011 62 538 123456, or using the plus notation: +62 538 123456.

Caller Instructions

For local callers within the same area code, it is often possible to dial only the subscriber number, depending on the specific carrier's local dialing rules. However, for calls from other regions in Indonesia, the full national format (0-538-XXXXXX) is required. International callers must always include the country code and drop the leading '0' of the area code. It is important to note that while mobile phones in Indonesia use different prefixes (e.g., 0811, 0812, etc.), the 538 code is exclusively for fixed-line services. If you are unsure whether a number is fixed or mobile, you can check the prefix; 538 is not a mobile prefix.

Overlay and Numbering Considerations

As of the latest ITU-T operational bulletins, there is no overlay code for the 538 area. The numbering area is served by a single geographic code, and no major changes have been announced. However, with the ongoing migration to IP-based networks, some fixed-line numbers may be reachable via VoIP, but the geographic identity remains tied to the Seruyan Regency. For businesses, having a local presence in Kuala Pembuang can be established by obtaining a fixed-line number with this area code, which may be used for customer service or administrative lines.