Area Code 0549 – San Marino

Overview of Area Code 0549

Area code 0549 is the geographic National Destination Code (NDC) assigned to the Republic of San Marino, a microstate enclaved within Italy. While San Marino is not part of the European Union, it participates in the Italian telephone numbering plan under a bilateral agreement. The code is used for both fixed-line and mobile services within San Marino, and calls from Italy are treated as national calls, whereas calls from other countries require the international prefix +378 or +39 0549 depending on the service provider.

Geographic Coverage and Administrative Jurisdiction

The 0549 code covers the entire territory of San Marino, including its capital, San Marino City (Città di San Marino), and all nine castelli (municipalities): Acquaviva, Borgo Maggiore, Chiesanuova, Domagnano, Faetano, Fiorentino, Montegiardino, and Serravalle. The code is administered by the San Marino Telecommunications Authority (Autorità per le Garanzie nelle Comunicazioni, AGCOM) in coordination with the Italian Ministry of Economic Development. Unlike typical Italian area codes that correspond to specific provinces, 0549 is a unique case where the NDC maps to an entire sovereign state.

Dialing Formats and Caller Instructions

For local callers within San Marino, the full national number is dialed without the 0: 0549 123456 becomes 0549 123456 when calling from Italy (including the 0). From international locations, callers must use the Italian country code +39, followed by the area code (including the leading 0) and the subscriber number: +39 0549 123456. However, some mobile operators in San Marino use the dedicated country code +378, which is used for calls from outside Italy. For example, a San Marino mobile number might be reached via +378 6123456. It is essential to confirm the correct prefix with the called party, as both +39 0549 and +378 are in use.

Numbering Structure and Overlay Considerations

Fixed-line numbers in San Marino consist of the area code 0549 followed by a 6-digit subscriber number, resulting in a total national significant number length of 9 digits (excluding the trunk prefix 0). Mobile numbers also use 0549 but are followed by a 7-digit number, starting with 6 or 7, for a total of 10 digits. There is no overlay code for San Marino; the 0549 code is exclusively used for the republic. Since the 1990s, San Marino has adopted the Italian numbering plan, and no area code changes are planned.

Practical Guidance for Callers

When calling a San Marino fixed line from Italy, dial 0549 followed by the local number. From other countries, dial the international access code (e.g., 00 from Europe, 011 from North America), then 39 0549 and the subscriber number. For calls to San Marino mobile numbers from abroad, you may need to use +378 instead of +39 0549, depending on the operator. Always verify the number format with the recipient to avoid misdialing.