Area Code 910 – Mobile Network
The phone area code for Mobile Network is 910 (international format +421910). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 910
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Overview of Slovakia's +421 910 Mobile Prefix
The +421 910 prefix is a non-geographic mobile network code assigned within Slovakia's national numbering plan, as governed by the Telecommunication Regulatory Authority of the Slovak Republic (Úrad pre reguláciu elektronických komunikácií a poštových služieb, or RÚ). This prefix is used exclusively for mobile services, meaning it is not tied to any specific city or region. Subscribers under +421 910 are reachable throughout Slovakia and, via international roaming, across the globe.
Technical Specifications and Formatting
Numbers with the +421 910 prefix follow the standard E.164 format for Slovak mobile numbers: a total of 12 digits when dialed internationally, comprising the country code +421, the national destination code (NDC) 910, and a seven-digit subscriber number. For example, a typical number would appear as +421 910 XXX XXX. When dialed domestically, the leading +421 is replaced by the trunk prefix 0, resulting in 0910 XXX XXX. The 0 is only used within Slovakia and is dropped for international calls.
This prefix is allocated to mobile network operators (MNOs) and mobile virtual network operators (MVNOs) operating in Slovakia. It supports all standard mobile services, including voice calls, SMS, MMS, and mobile data (4G/LTE and 5G). The prefix is non-geographic, meaning that number portability allows users to retain their 910 number even if they switch to a different operator, which is a regulatory requirement in the European Union.
Dialing Instructions
- Domestic calls (within Slovakia): Dial 0910 XXX XXX. The leading 0 is required for all national calls to mobile numbers.
- International calls to Slovakia: Dial your country's international access code (e.g., 00 from most European countries, 011 from the US/Canada), followed by 421, then 910 XXX XXX. Do not include the trunk prefix 0.
- International SMS and MMS: Use the international format +421 910 XXX XXX to ensure proper routing.
Regulatory and Operational Context
As with all Slovak mobile prefixes, numbers under 910 are subject to the EU's roaming regulations, ensuring that subscribers can use their plans across EU member states without additional surcharges. The prefix is also used for machine-to-machine (M2M) communications in some cases, though this is not exclusive to 910. For businesses, obtaining a 910 number is straightforward and does not require special permits, but it is essential to verify the current allocation status with RÚ, as prefix assignments may change over time.
For callers from abroad, it is important to note that while +421 910 numbers are primarily associated with mobile services, they may occasionally be used for non-geographic VoIP services, but this is rare. Always ensure you have the correct country code and full number to avoid misdialing.