Area Code 66 – Mobile Network
The phone area code for Mobile Network is 66 (international format +38066). Browse local exchange codes (NXX) and carrier assignments below.
Overview of Ukraine Mobile Prefix +380 66
The Ukrainian country calling code +380 is followed by a two-digit national destination code (NDC) that identifies the type of service and, for mobile networks, the specific operator or operator group. The prefix 66 is a non-geographic mobile allocation, meaning it does not correspond to any physical region or city. Instead, it is assigned to mobile network operators (MNOs) and mobile virtual network operators (MVNOs) that provide cellular services across the entire country.
Technical Format and Dialing
Ukrainian mobile numbers using the 66 prefix have a total length of 12 digits in international format, structured as follows:
- Country code: +380
- NDC: 66 (two digits)
- Subscriber number: 7 digits
Thus, a complete international dialing sequence appears as +380 66 XXX XX XX. When dialing from within Ukraine, the international prefix is replaced by the trunk prefix 0, so the national format becomes 0 66 XXX XX XX. For example, a subscriber number might be +380 66 123 45 67 (international) or 066 123 45 67 (national).
Operator Assignment and Portability
The 66 prefix was originally allocated to the mobile operator Kyivstar, one of the largest MNOs in Ukraine. However, due to mobile number portability (MNP), subscribers may retain their 66 numbers even when switching to another operator. Therefore, the prefix does not guarantee the current operator; it only indicates the original allocation. For routing purposes, the network uses the full number to determine the current operator via a central database.
Calling Instructions
- From abroad: Dial your international access code (e.g., 00 from most countries, or +), then 380, then 66, followed by the 7-digit subscriber number. Example: +380 66 123 45 67.
- From a Ukrainian fixed or mobile line: Dial 0, then 66, then the 7-digit subscriber number. Example: 0 66 123 45 67.
There are no additional area codes or local dialing variations because the number is non-geographic. Calls to Ukrainian mobile numbers are typically charged at mobile rates, which may be higher than local fixed-line rates when calling from abroad. It is advisable to check with your service provider for international calling rates.
International SMS and Services
For SMS, the same international format is used: +380 66 XXX XX XX. The 66 prefix supports all standard mobile services, including voice, SMS, MMS, and mobile data (3G/4G/5G). Some services may require the caller to be within Ukraine or to have an international roaming agreement in place.