Area Code 343 – Ekaterinburg
The phone area code for Ekaterinburg is 343 (international format +7343). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 343
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Ekaterinburg
Overview of Area Code +7 343
Area code +7 343 is the geographic National Destination Code (NDC) assigned to Ekaterinburg and its surrounding administrative district within the Sverdlovsk Oblast of the Russian Federation. As part of the Russian numbering plan, which follows ITU-T E.164 recommendations, the international dialing format for a fixed-line subscriber in this region is +7 343 XXX-XX-XX, where the full national significant number (NSN) comprises ten digits (including the leading '3' of the area code).
Geographic Coverage and Jurisdiction
The code serves the city of Ekaterinburg, the fourth-largest city in Russia and the administrative center of the Ural Federal District. It also covers several satellite towns and settlements within the Ekaterinburg urban agglomeration, such as Verkhnyaya Pyshma, Sredneuralsk, and Berezovsky. The geographic allocation is managed by the Russian Federal Communications Agency (Rossvyaz), which assigns numbering resources to local fixed-line operators. Subscribers within this region are typically connected to the PSTN via local exchanges, though many now use VoIP-based last-mile connections while retaining the same geographic number.
Dialing Formats and Instructions
- Domestic calls (within Russia): When dialing from another Russian city or region, the trunk prefix '8' is used, followed by the area code and the subscriber number: 8 343 XXX-XX-XX. For example, to call a number in Ekaterinburg from Moscow, you would dial 8 343 123-45-67.
- International calls (from outside Russia): Callers should dial the international access prefix (e.g., '00' in most countries), followed by Russia's country code +7, then the area code (without the leading '0' that is used in some countries' trunk prefixes) and the subscriber number: +7 343 123-45-67.
- Local calls (within the same area code): For calls between subscribers in the same Ekaterinburg area, it is often possible to dial only the seven-digit subscriber number, omitting the area code. However, due to number portability and the expansion of non-geographic services, it is recommended to always use the full ten-digit format to avoid misrouting.
Overlays and Numbering Considerations
As of the latest updates, there is no overlay code for the Ekaterinburg area; the 343 code remains the sole geographic NDC for the region. However, the Russian numbering plan has been undergoing modernization, and in some regions, additional codes have been introduced to meet demand. For Ekaterinburg, the current capacity is sufficient, but businesses and residents should be aware that number portability within Russia allows users to retain their 343 numbers even if they move to a different operator or, in some cases, to a different geographic location, subject to regulatory rules.
Practical Guidance for Callers
For local callers within Ekaterinburg, using the seven-digit local number is common, but for clarity and to avoid issues with mobile or VoIP networks, it is safer to use the full ten-digit format. For international callers, always include the country code and drop any leading '0' that might appear in local directories. When storing numbers in your phone, use the international format +7 343 XXX-XX-XX to ensure proper routing from any location.