+378 at a Glance
| Calling code | +378 |
| Country / region | San Marino |
| Also written as | 00378 (00 prefix, Europe and most of the world), 011 378 (011 prefix, US and Canada) |
| 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.
What does 00378 mean?
00378 is +378 written with the international prefix used in the UK, most of Europe and much of the world: 00 replaces the plus sign, so 00378 and +378 reach the same number in San Marino. From the US and Canada the prefix is 011, so the same code is written 011 378.
Is a call from +378 a scam?
Not necessarily, but treat unexpected international calls with caution. One-ring missed calls are the classic Wangiri callback scam: hoping you return the call to a premium-rate number. If you do not know anyone in San Marino, do not call back, and never share personal or payment details on calls you did not initiate.