Area Code 381 – Omsk
The phone area code for Omsk is 381 (international format +7381). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 381
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Omsk
Overview of Area Code +7 381
Area code +7 381 is a geographic National Destination Code (NDC) assigned to the Omsk Region (Omskaya Oblast) of the Russian Federation. This region is part of the Siberian Federal District and is a major administrative, industrial, and cultural hub in Western Siberia. The code covers the administrative center of Omsk, as well as numerous towns and rural settlements within the oblast, including Tara, Kalachinsk, Nazyvayevsk, and Isilkul.
The Omsk Region is strategically located along the Trans-Siberian Railway and the Irtysh River, making it a key transportation and logistics corridor. The city of Omsk itself is one of Russia's largest cities, with a population exceeding 1.1 million, and serves as a center for aerospace, defense, petrochemical, and agricultural industries.
Dialing Formats and Usage
When calling a fixed-line subscriber in the Omsk Region from within Russia, you must dial the trunk prefix 8, followed by the area code 381 and the seven-digit local subscriber number. For example, a local number such as 25-00-00 would be dialed as 8-381-25-00-00 from any other region in Russia.
When calling from outside Russia, the international access prefix of the originating country is used, followed by Russia's country code +7, then the area code 381 and the subscriber number. Thus, the same number would be dialed as +7 381 25-00-00 from abroad. It is important to note that the leading 8 is not used in international dialing.
Local calls within the Omsk Region may be dialed using only the seven-digit subscriber number if both parties are within the same local calling area. However, for calls between different cities within the region, the full national format (8-381-XXXXXXX) is required.
Geographic Coverage and Numbering
The +7 381 code is a geographic code, meaning that the tariff and routing are based on the physical location of the subscriber's line. The code is subdivided into several local exchange areas, each with its own range of subscriber numbers. For instance, Omsk city numbers typically begin with digits such as 2, 3, 4, 5, 6, 7, and 8, while other districts have their own allocations.
As of recent years, no overlay area code has been introduced for Omsk, and the region continues to use the single code 381. However, due to the growth of telecommunications services, the number of seven-digit subscriber numbers is sufficient to meet demand. All fixed-line numbers in this area are seven digits long, following the standard Russian numbering plan.
For callers from outside Russia, it is essential to replace the international access prefix (00 or +) with the appropriate code for their country. For example, from the United States, you would dial 011-7-381-XXX-XX-XX, while from the UK, you would dial 00-7-381-XXX-XX-XX.
In summary, area code +7 381 is exclusively associated with the Omsk Region, and understanding the correct dialing procedure ensures successful connectivity to businesses, government offices, and residents in this important Siberian region.