Area Code 484 – Kaluga
The phone area code for Kaluga is 484 (international format +7484). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 484
Select a central office code to view local carrier data and detailed information
📍 Geographic Location of Kaluga
Overview of Area Code +7 484
Area code +7 484 is a geographic National Destination Code (NDC) assigned to the Kaluga region of the Russian Federation. It serves the administrative center of Kaluga and its surrounding districts, including towns such as Obninsk, Maloyaroslavets, and Balabanovo. The code is part of the Russian numbering plan under ITU-T E.164, where the country calling code +7 is shared with Kazakhstan, but the NDC uniquely identifies the Kaluga region within Russia.
Dialing Formats
When calling a fixed-line number in Kaluga from within Russia, subscribers must dial the trunk prefix '8', followed by the area code and the subscriber number. For example, a local Kaluga number might be dialed as 8 484 2X-XX-XX (where '2' is the central office code). From abroad, callers must use the international format: +7 484 2X-XX-XX. Note that the leading '8' is replaced by '+7' for international calls. The total length of a national significant number (NSN) for geographic numbers in Russia is 10 digits, including the area code.
Geographic Coverage and Administration
The Kaluga region is located southwest of Moscow and is part of the Central Federal District. The area code 484 covers the entire region, which is subdivided into several local telephone exchanges. The region is known for its industrial and scientific significance, particularly the city of Obninsk, which is a major nuclear research center. The numbering plan for Kaluga follows the Russian national format, where the first digit after the area code often indicates the specific city or district (e.g., 2 for Kaluga city, 4 for Obninsk). However, due to number portability and the introduction of overlay codes in some areas, this is not always a strict rule.
Caller Instructions
For local callers within Kaluga, it is common to dial only the subscriber number (without the area code) when calling within the same local exchange area. However, for calls between different districts within the Kaluga region, the full national format (8 484 ...) is required. For international callers, always use the plus sign (+) or the international access prefix of your country, followed by 7 (Russia's country code), then 484 and the subscriber number. Remember to omit any leading '0' or '8' that might be used domestically.
Overlay and Numbering Considerations
As of the latest updates, there is no overlay code for the Kaluga region; the 484 code remains the sole geographic code for the area. However, with the growing demand for telecommunication services, the Russian Ministry of Digital Development has introduced number pooling and portability, allowing subscribers to retain their numbers when changing operators. This does not affect the geographic significance of the code, but it means that a number with the 484 prefix might be served by a different operator than originally assigned. For VoIP and mobile users, the geographic code is not an indicator of the caller's actual location, as these services are non-geographic and can be used anywhere.