Area Code 388 – Republic of Altai
The phone area code for Republic of Altai is 388 (international format +7388). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 388
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Republic of Altai
Geographic Overview
The +7 388 area code is a geographic National Destination Code (NDC) assigned to the Republic of Altai, a federal subject of the Russian Federation located in the southern part of Western Siberia. This region, known for its mountainous terrain and Altai Nature Reserve, borders Mongolia, China, and Kazakhstan. The administrative center is Gorno-Altaysk, which, along with other settlements in the republic, is served by this code.
Dialing Formats
For international callers, the number format is +7 388 XXX-XX-XX, where +7 is the country code for Russia and Kazakhstan, 388 is the area code, and the subscriber number is seven digits long. Within Russia, callers from other regions must dial 8 388 XXX-XX-XX (using the trunk prefix 8). Local calls within the same area code may require only the seven-digit subscriber number, depending on the specific local dialing plan. However, due to the widespread adoption of modern telephony, it is always safe to use the full national format.
Geographic Coverage
The code covers the entire Republic of Altai, including its capital Gorno-Altaysk and other key localities such as Mayma, Chemal, and Onguday. The region is sparsely populated, and the code serves both fixed-line PSTN subscribers and, in some cases, VoIP services that are tied to the geographic area.
Caller Instructions
For international callers, always replace the trunk prefix (8) with +7 when dialing from abroad. For example, to call a number in Gorno-Altaysk, you would dial +7 388 2XX-XX-XX (where 2 is the central office code for Gorno-Altaysk). If you are within Russia but outside the Altai Republic, dial 8 388 followed by the subscriber number. Local callers should check if seven-digit dialing is supported; if not, use the national format.
Overlays and Numbering Plan
Currently, there is no overlay code for the Republic of Altai; the 388 code is the sole geographic NDC for the region. The Russian numbering plan adheres to ITU-T E.164, and the Ministry of Digital Development, Communications and Mass Media oversees the allocation of numbering resources. As of the latest updates, no changes to this code are planned, but users should always verify with their service provider for any local dialing changes.