Telephone numbers in San Marino have six to ten digits. Numbers starting with either 0, 8or9 are assigned to landlines, 6 is used for mobile services, 5 for IP telephony services and 7 for premium numbers. No trunk prefixes are used: all the digits are always dialed.[1]
The country code for San Marino is 378.[2] However, landlines are also reachable via the Italian country code 39.[3]
Until 1996, San Marino was part of the Italian telephone numbering plan, using the Italian area code 0549.[5] In 1996, the country adopted country code 378, although existing dialing arrangements between San Marino and Italy continued without change.[6] In 1998, as Italy switched to a closed dialing plan, San Marino incorporated the 0549 area code into its subscriber numbers.[7]
A telephone number in San Marino may be reached as follows:[citation needed]
0549 xxx xxx: from Italy
+378 xxx xxx: from all other countries
+39 0549 xxx xxx: from other countries, using the Italian country code
+378 0549 xxx xxx: from other countries, using the San Marino country code and the Italian area code
