Area Code 5750 – Two years old, Kharkiv

Overview of Area Code +380 5750

Area code 5750 is a newly activated geographic numbering resource within the Ukrainian national numbering plan, assigned to the city of Kharkiv and its surrounding administrative district. As part of the Kharkiv region's fixed-line telephony infrastructure, this code follows the ITU-T E.164 international standard and is used exclusively for landline services. The code was introduced to address the growing demand for telephone numbers in the region, supplementing the existing 57 and 572 codes that have historically served Kharkiv and the Kharkiv Oblast.

Geographic Coverage and Administrative Jurisdiction

The 5750 prefix is allocated to the Kharkiv urban agglomeration, which includes the city of Kharkiv itself and adjacent settlements within the Kharkiv Raion. Kharkiv is the second-largest city in Ukraine and serves as the administrative center of Kharkiv Oblast. The code covers both residential and business fixed-line subscribers, providing local loop connectivity through the incumbent operator and alternative fixed-line carriers.

Dialing Formats and Usage

When dialing a number with the 5750 prefix, the subscriber number typically consists of 4 to 5 additional digits, resulting in a total national significant number (NSN) length of 9 digits (excluding the leading zero). The complete international format for calling a Kharkiv number with this code from abroad is:

• International dialing: +380 5750 XXX XX (replace X with the subscriber digits).
• National dialing (within Ukraine): 0 5750 XXX XX.

For example, if the subscriber number is 12345, the international format would be +380 5750 12345, and the national format would be 0 5750 12345.

Caller Instructions

For local callers within Kharkiv: When calling another fixed-line number within the same geographic area, local calls may be dialed using the 7-digit subscriber number without the area code, depending on the operator's dialing plan. However, to avoid confusion and ensure correct routing, it is recommended to always use the full national format (0 5750 XXX XX) for calls between different fixed-line zones.

For callers from other regions of Ukraine: You must dial the national trunk prefix 0, followed by the area code 5750 and the subscriber number. For example, to call Kharkiv from Kyiv, dial 0 5750 12345.

For international callers: Dial your country's international access code (e.g., 00 from most European countries, 011 from the US/Canada), followed by Ukraine's country code 380, then the area code 5750 (without the leading zero) and the subscriber number. For instance, from the US, you would dial 011 380 5750 12345.

Overlay and Numbering Considerations

The 5750 code is an overlay on the existing Kharkiv numbering area, meaning that it coexists with the older 57 and 572 codes. As a result, ten-digit dialing (including the trunk prefix) is mandatory for all calls within the Kharkiv region to ensure proper call routing. Subscribers with the 5750 prefix are assigned numbers from the same rate center as other Kharkiv codes, and there are no additional charges for calling between different area codes within the same geographic region.

Because the code is relatively new, it is primarily used for new fixed-line connections, including fiber-to-the-home (FTTH) and VoIP-based fixed services. The allocation of this code is managed by the Ukrainian State Center of Radio Frequencies (UCRF) under the authority of the National Commission for State Regulation of Electronic Communications, Informatization and Information Society (NCCIR).