Area Code 40 – Mobile Network
The phone area code for Mobile Network is 40 (international format +35840). Browse local exchange codes (NXX) and carrier assignments below.
📞 Exchange Codes (NXX) for Area Code 40
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Overview of Finland's Mobile Prefix +358 40
The +358 40 prefix is a non-geographic mobile network code assigned within Finland's national numbering plan, as administered by Traficom (the Finnish Transport and Communications Agency). Unlike geographic area codes, which correspond to specific regions, the 40 prefix is used exclusively for mobile services, enabling subscribers to be reached anywhere in the country without a fixed location. This prefix is part of a broader range of mobile codes (e.g., 40, 50, 44, 45) that support the high penetration of mobile communications in Finland.
Technical Characteristics and Numbering
Finnish mobile numbers using the 40 prefix follow the E.164 international format: +358 40 X XXXXXXX. The total number length after the country code is typically 9 digits, with the prefix '40' serving as the national destination code (NDC). The remaining seven digits are the subscriber number, allocated by mobile network operators (MNOs) and mobile virtual network operators (MVNOs). These numbers are not portable to fixed lines but are fully portable between mobile operators within Finland, allowing users to retain their number when switching providers. The prefix is used for both voice and SMS/MMS services, and supports international roaming and messaging.
Dialing Instructions
For callers within Finland, the national trunk prefix '0' must be dialed before the subscriber number: 040 X XXXXXXX. For international callers, the Finnish country code +358 is used, and the leading '0' is omitted: +358 40 X XXXXXXX. For example, a Finnish mobile number might be written as 040 123 4567 locally, or +358 40 123 4567 internationally. When dialing from abroad, ensure you replace the '+' with your country's international access code (e.g., 011 from the US, 00 from most European countries).
Regulatory and Operational Context
The 40 prefix is non-geographic, meaning it is not tied to any specific city or region. It is allocated to various MNOs and MVNOs, including major operators like Telia, Elisa, and DNA, as well as smaller virtual operators. This allocation supports competition and consumer choice. The numbering plan is managed under the ITU-T E.164 recommendation, and Traficom ensures that numbering resources are used efficiently. Mobile numbers in Finland are not subject to geographic tariffs; calls to mobile numbers are typically charged at mobile rates, which may vary depending on the caller's plan. Emergency services (112) are accessible from any mobile phone without a SIM card, but standard calls to 40 numbers require an active subscription.