+378 at a Glance
| Calling code | +378 |
| Country / region | San Marino |
| From the US / Canada | 011 378 + national number |
| From most other countries | 00 378 + national number (or +378 from a mobile) |
How to Dial a +378 Number
- Start with your country's international prefix: 011 from the US and Canada, 00 from most of Europe, or simply + from any mobile phone.
- Dial 378.
- Dial the national number. If it starts with a 0, drop that leading zero.
Missed Call From +378?
Unrecognized international numbers are a common pattern in Wangiri ("one ring") scams: the caller hangs up after one ring hoping you call back a premium-rate number. If you don't know anyone in San Marino, don't call back. If the call matters, the caller will try again or leave a message.
Frequently Asked Questions
Which country has calling code +378?
San Marino.
How do I call +378 from the US?
Dial 011 378 followed by the national number without its leading zero.
Is a call from +378 a scam?
Not necessarily, but treat unexpected international calls with caution, especially one-ring missed calls. Never share personal or payment details on calls you did not initiate.