Area Code 4739 – Chernobyl, Cherkasy

Overview of Area Code +380 4739

Area code 4739 is a geographic National Destination Code (NDC) within the Ukrainian public switched telephone network (PSTN), assigned under the country calling code +380. It serves the administrative district around the city of Chernobyl and parts of the Cherkasy region, though the primary recognized service area is the Chernobyl Exclusion Zone and its immediate surroundings. This code is used for fixed-line telephony and is allocated to local exchange areas that fall under the jurisdiction of the Cherkasy oblast's telecommunications infrastructure.

Geographic Coverage and Administrative Context

The 4739 area code covers a sparsely populated but historically significant territory. The city of Chernobyl, now largely known for the 1986 nuclear disaster, is located within the Exclusion Zone, which is administered separately but still uses the 4739 code for the few remaining landlines and official communication lines. The code also extends to some settlements in the Cherkasy region that are not part of the Exclusion Zone, providing PSTN services to local businesses and residents. Due to the low population density, the number of active subscribers under this code is limited, and the infrastructure is primarily maintained for administrative, scientific, and emergency purposes.

Dialing Formats and Usage

To call a fixed-line number in the 4739 area from within Ukraine, subscribers must dial the trunk prefix 0, followed by the area code 4739 and the subscriber's 5- or 6-digit local number. For example, a local number might be 12345, so the national dialing format would be 0 4739 12345. From abroad, callers must dial the international access code (e.g., 00 from most countries), followed by Ukraine's country code 380, the area code without the leading zero (4739), and the local number: +380 4739 12345. When calling locally within the same area code, the national format is still required; there is no abbreviated local dialing.

Overlays and Numbering Plan Considerations

As of the latest ITU-T E.164 national numbering plan updates, Ukraine has not introduced overlay codes for the 4739 area. The code remains a standalone geographic NDC. However, due to the ongoing digitization of the Ukrainian PSTN, some numbers in this area may be migrated to VoIP or mobile networks, but the geographic prefix remains associated with the physical location. Callers should be aware that numbers under this code are not mobile and cannot be reached via SMS or mobile-specific services.

Practical Information for Callers

For local callers within Ukraine, dialing a 4739 number from a mobile phone requires the same national format: 0 4739 12345. International callers should note that the Chernobyl area is a restricted zone, and most numbers are not publicly listed. If you need to reach a business or official entity in this region, it is advisable to confirm the number format with the recipient, as some lines may be routed through other exchanges. The cost of calling this area is typically standard for fixed-line calls within Ukraine, but international rates vary by carrier.