Area Code 940 – Mobile Network
The phone area code for Mobile Network is 940 (international format +421940). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 940
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Overview of Slovakia's +421 940 Prefix
The +421 940 prefix is a non-geographic mobile network code assigned within the Slovak Republic's national numbering plan. It is used exclusively for mobile services, meaning the number is not tied to a specific city or region but rather to a mobile network operator (MNO) or mobile virtual network operator (MVNO). In Slovakia, mobile numbers typically begin with 9 and are nine digits long after the country code. Thus, a full international number using this prefix appears as +421 940 XXX XXX, where X represents the subscriber's unique digits.
Technical Formatting and Dialing Procedures
When dialing a Slovak mobile number from abroad, you must include the international access code (e.g., 00 from most European countries, or + from mobile phones), followed by the country code 421, then the national significant number. For numbers under the 940 prefix, the national significant number is 940 XXX XXX (nine digits total). From within Slovakia, you would dial 0940 XXX XXX, omitting the +421. It is important to note that the leading '0' is used only for domestic calls; it is dropped when dialing internationally.
All Slovak mobile numbers, including those with the 940 prefix, are part of the country's closed numbering plan. This means that local dialing within Slovakia requires the full nine-digit national number, including the leading '0' for mobile calls. There are no area codes or local number variations for mobile services.
Number Portability and Routing
Slovakia implemented mobile number portability (MNP), allowing subscribers to retain their mobile numbers when switching operators. Therefore, while the 940 prefix was originally allocated to a specific operator, it may now be used by any MNO or MVNO. This does not affect the dialing format but may influence routing and interconnection agreements between carriers.
Usage and Services
Numbers with the 940 prefix support standard mobile services, including voice calls, SMS, MMS, and mobile data. They are also used for international SMS and voice roaming. When sending an SMS to a Slovak mobile number from abroad, you must use the international format: +421 940 XXX XXX. The '940' prefix is not reserved for any special tariff or service class; it is treated as a standard mobile number.
Regulatory and Administrative Context
The allocation and management of numbering resources in Slovakia are overseen by the Regulatory Authority for Electronic Communications and Postal Services (RU). The 940 prefix is part of the national numbering plan and is subject to RU's regulations, which ensure efficient and fair use of numbering resources.
For businesses or individuals looking to contact a Slovak mobile user, the 940 prefix is a reliable indicator that the number is mobile, but due to number portability, it does not guarantee a specific operator. Always verify the current operator if needed for billing or service-specific reasons.