Area Code 345 – Tyumen

Overview of Area Code +7 345

Area code 345 is a geographic National Destination Code (NDC) within the Russian Federation's national numbering plan, which adheres to ITU-T E.164 standards. Assigned to the Tyumen Oblast, this code serves the administrative center of Tyumen and its surrounding municipalities. The region is part of the Ural Federal District and is a major industrial hub, particularly known for its oil and gas sector.

Geographic Coverage and Administrative Jurisdiction

The +7 345 area code covers the city of Tyumen and several districts within Tyumen Oblast, including but not limited to the Tyumensky District. As a geographic code, it is tied to a specific physical region, and calls to numbers under this code are routed to the local PSTN infrastructure. The code is used for both fixed-line and some VoIP services that are registered to the area, though mobile numbers in Russia are not assigned to geographic codes.

Dialing Formats and Caller Instructions

When dialing a number within the +7 345 area code, the format depends on the caller's location:

• Local calls (within Tyumen and surrounding areas): Dial the subscriber number directly, typically 6 to 7 digits, without the area code. For example, if the local number is 25-00-00, simply dial 25-00-00.
• Long-distance calls from other regions of Russia: Dial 8 (the trunk prefix for domestic calls) followed by 345 and the subscriber number. For instance, to call a Tyumen number from Moscow, you would dial 8-345-25-00-00.
• International calls from outside Russia: Dial the international access prefix (e.g., 00 or +), then Russia's country code 7, followed by the area code 345 and the subscriber number. For example, from the United States, you would dial 011-7-345-25-00-00 or +7-345-25-00-00.

Numbering Plan and Overlay Considerations

Tyumen does not currently have an overlay code; the 345 code is the sole geographic code for the region. Subscriber numbers under this code can vary in length, typically ranging from 6 to 7 digits, depending on the local exchange capacity. The Russian numbering plan allows for such variations, and the total length of a national significant number (NSN) is usually 10 digits (including the area code but excluding the trunk prefix).

Practical Information for Callers

For callers within Russia, using the trunk prefix 8 is standard for long-distance calls. However, when dialing from a mobile phone, it is often acceptable to use +7 instead of 8, as mobile networks automatically interpret the +7 country code. For international callers, it is crucial to replace the leading 8 with +7 when using a mobile or VoIP service. Always verify the current dialing procedures with your telecom provider, as some VoIP services may require different formats.