Area Code 423 – Primorie territory

Overview of Area Code +7 423

Area code +7 423 is a geographic National Destination Code (NDC) within the Russian Federation numbering plan, assigned to the Primorsky Krai (Primorie territory) in the Russian Far East. The administrative center of this region is the city of Vladivostok, which serves as the primary hub for the code. The code covers the city itself and surrounding localities within the krai, including but not limited to Artem, Ussuriysk, Nakhodka, and Partizansk. As a geographic code, its use is tied to the physical location of the subscriber's line, and it is administered under the jurisdiction of the Russian Federal Communications Agency (Rossvyaz).

Dialing Formats

When calling a fixed-line subscriber in Primorsky Krai from within Russia, the national trunk prefix 8 is used, followed by the area code and the subscriber number. The full national format is 8 (423) XXX-XX-XX, where the subscriber number is seven digits long. For international callers, the country code for Russia is +7, so the international format becomes +7 423 XXX-XX-XX. For example, a local Vladivostok number might be dialed as 8 (423) 245-67-89 domestically, or +7 423 245-67-89 from abroad. Note that when dialing from a mobile phone within Russia, the leading 8 can be replaced by +7, but the trunk prefix is not required when using the +7 international format.

Geographic Coverage and Overlays

Primorsky Krai is a vast region bordering China and North Korea, and the 423 code serves its most populous areas. Vladivostok, the largest city and a major Pacific port, is the principal destination for calls to this code. Other significant cities within the code include Ussuriysk, known for its agricultural and transport significance, and Nakhodka, a key shipping hub. The code is not overlaid by another NDC; it is the sole geographic code for the region, meaning that no additional area codes are required to serve the same territory. This simplifies dialing: all fixed-line numbers in the region share the same 423 prefix.

Caller Instructions

For local callers within Primorsky Krai, dialing another fixed-line number in the same code often requires only the seven-digit subscriber number, omitting the area code, depending on the local network configuration. However, for clarity and reliability, it is recommended to always use the full national format. For callers from other regions of Russia, dial 8 423 followed by the seven-digit number. International callers should dial their international access code (e.g., 00 from most countries) followed by 7 423 and the subscriber number. Be aware that calls to this geographic code are typically charged as domestic long-distance within Russia, and international rates apply for calls from abroad.