Country Code +378

Q: How to dial +378 from the US?

To call San Marino from the US, dial 011 + 378 + the local phone number. From a mobile phone, you can also use +378 followed by the number.

San Marino uses the international dialing code +378

+378

Which Country Has Code +378?

San Marino uses the international dialing code +378.

How to Call San Marino from the US

Method	Dial Sequence	Example
From a landline	`011 + 378 + local number`	`011-378-XXX-XXXX`
From a mobile phone	`+378 + local number`	`+378-XXX-XXXX`
Using a calling card	`Access # + 011 + 378 + local number`	`1-800-XXX + 011-378-XXX-XXXX`

Important: When dialing from a US landline, always start with 011 (the US international access code). From a mobile phone, you can use the + symbol instead by pressing and holding the 0 key.

Step-by-Step Instructions

1 Dial 011 — the US exit code for international calls
2 Dial 378 — the country code for San Marino
3 Dial the local area code (if applicable, drop any leading 0)
4 Dial the local phone number

Got a Call From +378?

A number starting with +378 is registered in San Marino. If you know someone there, it may be them. If you don't, be careful before you call back.

•Don't call back a number you don't recognize. One-ring scams hang up after a ring or two so you return the call, which can add a per-minute charge on top of an international rate.
•Caller ID can be faked. The code shown is not proof of where the caller really is.
•Real callers leave a message. If it matters, they'll text, email or leave a voicemail. Otherwise, block the number.

Frequently Asked Questions

Which country has country code 378?

San Marino uses the international dialing code +378. This code is assigned to San Marino by the International Telecommunication Union (ITU).

How to dial +378 from the US?

To call San Marino from the US, dial 011 + 378 + local number. From a mobile phone, you can also use +378 followed by the number. The 011 prefix is the US international access code required when calling from a landline.

I got a call from +378. Should I call back?

Not if you don't recognize the number. Calls from +378 are international calls. Scammers use one-ring calls to get people to call back, which can add a per-minute charge on top of an international rate, and caller ID can be faked. If it matters, the caller will leave a message; otherwise block the number.

San Marino Quick Info

Country	San Marino
Dialing Code	+378
ISO-2 Code	`sm`
ISO-3 Code	`SMR`
Capital	San Marino
Continent	Europe
Population	30,324
Currency	Euro
Domain	`sm`

View Full San Marino Profile

Related Resources

How to Call San Marino San Marino Phone Format US Area Codes Directory International Calling Guide All Country Codes

Quick Tip

Save money on international calls by using VoIP services like Skype, WhatsApp, or Google Voice. Many offer free or low-cost calls to landlines and mobiles worldwide.