Telephone numbers in Ukraine

Telephone numbers in Ukraine are administered by the Ministry of Infrastructure.

The country last enacted a telephone numbering plan in 2009. National telephone numbers consist of a two-digit zone code, an optional sub-zone code, an optional filler (zero to two "2"'s), and the local telephone number (five to seven digits). Following the 2022 Russian invasion of Ukraine, the regions of Crimea, Donetsk, and Luhansk were assigned Russian telephone prefixes by the Russian occupation administration.

On 14 October 2009, Ukraine switched to numbering conventions common in the European Union.

Calling nationwide requires dialing 0, followed by the region code, preceding the local number. For instance, to call Kyiv from Odesa, users dial 0 44 xxx xxxx. The same convention was adopted for mobile operators.

For local calls, users may dial the local number without the prefixes. Mobile users must dial the full 0-prefixed number, although operators may implement local dialing in cities.

The in-country sequence for ordinary zones consists of a two-digit zone code, an optional subzone code (never used for the capital of the geographic region corresponding to a phone zone), an optional filler (0 to 2 "2"s, used to make the whole in-country sequence contain exactly 9 digits) and the local phone number (5 to 7 digits). When dialing from cell phones, the in-country dial sequence (with the 0 XX prefix) is used even for phones of the same provider. Otherwise a call may be placed in the nearest geographic area.

Area codes correspond to geographic regions ("oblasts") with exception of Kyiv and formerly Sevastopol which utilize their own area code.

Cell phone numbers can be assigned both within the cell phone provider zone and within a geographic zone. The latter arrangement is used mainly for CDMA phones and for GSM operators selling their connectivity within one city, like GoldenTelecom GSM. Allocation of new GSM cell phone numbers within a geographic zone is very rare now because law requires all incoming calls to be free, including incoming calls to a cell phone.