Area Code 6263 – Kramatorsk/Slavyansk, Donetsk

Geographic Coverage and Administrative Jurisdiction

The Ukrainian national destination code 6263 is a geographic area code assigned to the urban agglomeration of Kramatorsk and Sloviansk (Slavyansk) in the northern part of Donetsk Oblast. This region functions as a key administrative and industrial hub in eastern Ukraine, particularly serving as a governmental center for the Donetsk region since 2014. The code covers the cities of Kramatorsk, Sloviansk, and their immediate suburban areas, including adjacent settlements within the Kramatorsk and Sloviansk raions.

Dialing Formats and Caller Instructions

For domestic callers within Ukraine, the number must be dialed in the national format: 0 6263 XXX XX, where the leading '0' is the trunk prefix used to access the national long-distance network. For example, a local number in Kramatorsk would be dialed as 0 6263 123 45 from any other region in Ukraine. International callers must replace the trunk prefix with the Ukrainian country calling code +380, resulting in the international format: +380 6263 XXX XX. Thus, the same number would be dialed as +380 6263 123 45 from abroad. When dialing locally within the same geographic area, the national destination code and trunk prefix may be omitted, but this practice is increasingly rare as the network migrates to full closed numbering.

Numbering Plan Structure and Overlay Considerations

Geographic numbers under the 6263 code follow the standard Ukrainian numbering plan, with a total length of 9 digits after the country code. The prefix 6263 is a four-digit national destination code, followed by a subscriber number of 5 to 7 digits, depending on the specific allocation. As of the latest ITU-T E.164 guidelines, no overlay codes have been introduced for this area, meaning that 6263 remains the sole geographic code for the Kramatorsk-Sloviansk conurbation. However, due to the ongoing administrative changes and potential future renumbering, it is advisable to verify the current dialing procedures with the Ukrainian regulator (NCCIR) or your service provider.

Practical Usage and Call Routing

These geographic numbers are primarily used for fixed-line PSTN services, but they may also be assigned to VoIP operators that provide local presence. Calls to 6263 numbers are routed via the Ukrainian national backbone network, and the tariff for calling these numbers depends on the caller's operator and subscription plan. For businesses, having a 6263 number establishes a local presence in the Kramatorsk-Sloviansk area, which is essential for reaching customers who prefer to call local numbers. It is important to note that due to the security situation in the Donetsk region, some network infrastructure may be affected, but the numbering plan remains officially recognized.