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San Marino Country Code: +378

The international calling code for San Marino is +378. You need this code to dial any phone number in San Marino from another country. This code is assigned by the International Telecommunication Union (ITU) under the E.164 standard. Below you will find everything you need to successfully place a call to San Marino, including the correct number format, trunk prefix, and worked examples.

Country Code
+378
ISO Code
SM
Trunk Prefix
None
No prefix to remove
Example Number
+378 66 12 12 12

How to Call San Marino from Abroad

Follow these steps to dial a phone number in San Marino from any other country. The process is the same whether you are calling a landline or a mobile number.

  1. 1
    Dial the international access code or +

    On a mobile phone, press and hold 0 to get the + symbol. From a landline, dial your country's exit code (00 from most of Europe, 011 from the US/Canada, 0011 from Australia). With Kinvo, simply type + in the dialer.

  2. 2
    Dial San Marino's country code: 378

    After the + or exit code, enter 378. This routes your call to San Marino's telephone network.

  3. 3
    Dial the full local number

    San Marino does not use a trunk prefix, so dial the local number exactly as written after the country code. No digits need to be removed.

  4. 4
    Dial the remaining local number

    Enter the area code (if applicable) and the subscriber number. The complete international number should look like this: +378 66 12 12 12

San Marino Phone Number Format

Landline Numbers

Landline numbers in San Marino typically include an area code that identifies the city or region, followed by the subscriber number.

Mobile Numbers

Mobile phone numbers in San Marino typically begin with 6 (after the country code).

International Format Example

+378 66 12 12 12
+378 = Country codeRemaining digits = Area code + subscriber number

Dialing Example: Calling San Marino

San Marino does not use a trunk prefix, so the domestic and international formats are very similar. Simply add +378 before the local number:

Local number:66 12 12 12
International format:+378 66 12 12 12

Call San Marino from Your Browser

With Kinvo, you can call landlines and mobiles in San Marino directly from Chrome, Firefox, Safari, or Edge. No app to install, no subscription. Just sign up, add pay-as-you-go credits (starting from $5), and dial +378 followed by the local number.

Every new account includes a free 1-minute test call. No credit card required.

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Frequently Asked Questions: San Marino Country Code

What is the country code for San Marino?

The international dialing code for San Marino is +378. This code must be dialed before the local phone number when calling San Marino from any other country. The ISO 3166-1 alpha-2 code for San Marino is SM.

How do I call San Marino from the United States?

From the US, dial 011 (the US exit code) followed by 378 (the San Marino country code) and then the local number. Alternatively, dial +378 from a mobile phone. For example: +378 66 12 12 12.

Do I need to drop the 0 when calling San Marino internationally?

San Marino does not use a trunk prefix that needs to be removed. Simply add the country code +378 before the local number as-is.

What do San Marino mobile numbers start with?

Mobile phone numbers in San Marino typically start with 6 after the country code +378. When dialing from abroad, the full mobile number would begin with +378 6...

Can I call San Marino from my browser?

Yes. Kinvo allows you to call any phone number in San Marino directly from your web browser using WebRTC technology. No app download or installation is required. Simply create a free account, add credits (from $5), and dial +378 followed by the local number. Calls include HD voice quality and end-to-end encryption.