Area Code 5666 – Nikopol, Dnipro

Overview of Area Code 5666

Area code 5666 is a geographic National Destination Code (NDC) assigned to the city of Nikopol in the Dnipropetrovsk Oblast of Ukraine. It is part of the national numbering plan administered by the Ukrainian State Centre of Radio Frequencies (UCRF) under the framework of ITU-T E.164. The code is used for fixed-line (PSTN) services within Nikopol and its immediate administrative surroundings. As a geographic code, it identifies the physical location of the subscriber's line, which is essential for routing calls through the public switched telephone network.

Geographic Coverage and Administrative Jurisdiction

Nikopol is a city of regional significance located in the southern part of Dnipropetrovsk Oblast, on the banks of the Kakhovka Reservoir on the Dnieper River. The area code 5666 covers the city proper and, in some cases, adjacent rural settlements that are part of the Nikopol urban hromada. The Dnipropetrovsk Oblast is one of Ukraine's most industrialized regions, and Nikopol is known for its metallurgical and mining industries. The city serves as an important administrative and economic center for the surrounding area.

Dialing Formats and Caller Instructions

To call a Nikopol fixed-line number from within Ukraine, you must use the national trunk prefix 0 followed by the area code and the subscriber number. For example, if the local subscriber number is 123456, you would dial 0 5666 123456. From abroad, you would dial the international access code (e.g., 00 from most European countries, or + from mobile phones), followed by Ukraine's country code 380, then the area code without the leading zero, and the subscriber number: +380 5666 123456. Note that the total number length after the country code is 9 digits, which is standard for Ukrainian geographic numbers.

Overlay and Numbering Considerations

Currently, there is no overlay code for Nikopol; the area code 5666 is the sole geographic code for the city. However, as with many Ukrainian cities, number portability is available for fixed-line services, allowing subscribers to retain their numbers when changing operators within the same geographic area. For callers, it is important to always include the area code when dialing from mobile phones or from outside the local area, as local numbers are not valid without it. When traveling in Ukraine, using the national format with the leading 0 is mandatory for all calls to geographic numbers.

Practical Examples

For a local call within Nikopol, you may dial just the subscriber number if your phone is connected to the same exchange, but this is increasingly rare. For all practical purposes, use the full national format: 0 5666 123456. International callers should use +380 5666 123456. These formats ensure proper routing through Ukraine's telecommunications infrastructure.