Area Code 2582 – Choibalsan city, Dornod

Geographic Overview

Area code 2582 is a geographic destination code assigned to Choibalsan, the administrative capital of Dornod Province in eastern Mongolia. Choibalsan is the fourth-largest city in Mongolia and serves as a major economic and transport hub for the eastern region, with direct rail links to the Trans-Mongolian Railway and proximity to the Chinese border. The code covers the city proper and its immediate surrounding settlements, including the industrial and residential districts along the Kherlen River.

Dialing Formats

When calling a fixed-line subscriber in Choibalsan from abroad, you must use the international format: +976 2582 XXXX, where +976 is Mongolia's country calling code, 2582 is the national destination code (NDC), and XXXX is the local subscriber number (typically 4 digits). For example, a complete international number might appear as +976 2582 1234.

Domestic callers from other regions of Mongolia should dial 0 2582 XXXX (trunk prefix 0), while local callers within Choibalsan can often dial just the 4-digit subscriber number, depending on their operator's local dialing rules.

Regulatory and Technical Notes

Mongolia's numbering plan follows ITU-T E.164 recommendations. The Communications Regulatory Commission of Mongolia (CRC) administers geographic area codes, and 2582 is classified as a geographic number. These numbers are primarily used for fixed-line PSTN services, though some VoIP providers may offer virtual numbers with this area code. As of the latest CRC updates, there is no overlay code for Choibalsan; the area is served solely by 2582.

Callers should be aware that while mobile numbers in Mongolia are non-geographic (starting with 8 or 9), 2582 is exclusively for fixed-line services. International callers should verify the current dialing procedures with their carrier, as some operators may require different exit codes or have specific routing agreements.

Practical Guidance

• From abroad: Dial your country's international exit code, then 976 2582, followed by the local 4-digit number.
• From within Mongolia (outside Choibalsan): Dial 0 2582 plus the local number.
• From a mobile phone in Mongolia: Dial 0 2582 plus the local number; charges may vary by operator.

Always confirm the number length and dialing format with your service provider if you encounter issues, as local number lengths can occasionally vary.