Area Code 6258 – Donetsk
The phone area code for Donetsk is 6258 (international format +3806258). Browse local exchange codes (NXX) and carrier assignments below.
📍 Geographic Location of Donetsk
Geographic Overview
The +380 6258 prefix is a geographic National Destination Code (NDC) assigned to the Donetsk region of Ukraine, specifically serving the city of Kostiantynivka and its surrounding areas. This code is part of the national numbering plan administered by the Ukrainian State Centre of Radio Frequencies (UCRF) under ITU-T E.164 guidelines. Kostiantynivka is an important industrial hub in the eastern part of the country, with a population of approximately 70,000 (pre-war estimates). The region is known for its metallurgical and glass production industries.
Dialing Formats
To call a landline in Kostiantynivka from within Ukraine, subscribers must dial the national trunk prefix 0, followed by the area code 6258 and the subscriber's 5-digit local number. The complete national format is: 0 6258 XX XX XX.
For international callers, the Ukrainian country code +380 replaces the trunk prefix, resulting in the format: +380 6258 XX XX XX. For example, a local number 12345 would be dialed as 0 6258 12345 domestically and +380 6258 12345 from abroad.
Calling Instructions
- Local callers (within the Kostiantynivka area): may dial the subscriber number directly without the area code, depending on the local network configuration. However, for clarity and to avoid misdialing, it is recommended to always use the full national format.
- National long-distance callers (from other Ukrainian cities): dial 0 6258 followed by the local number.
- International callers: dial the international access prefix (e.g., 00 from most European countries, 011 from the US/Canada), then 380 6258 and the local number.
Regulatory and Technical Notes
The 6258 code is a geographic prefix, meaning it is tied to a specific physical location. Calls to this number are routed over the PSTN and are subject to standard national and international tariffs. As of 2024, due to the ongoing conflict in eastern Ukraine, some fixed-line services in the region may be disrupted or rerouted via alternative infrastructure. However, the numbering plan remains officially assigned. No overlay codes have been introduced for this area, so the 5-digit subscriber numbering is still in effect. Businesses and residents in Kostiantynivka should ensure their contact information reflects the correct international format to facilitate seamless global communication.