San Marino country code +378 — call San Marino & get a number.
A republic the size of a small city, wrapped entirely by Italy yet keeping its own +378 — San Marino dials in two ways at once. Here are the exact formats from the US, UK and Italy, the number ranges and live mobile prefixes, plus how to secure a Sammarinese virtual number with MCM.
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San Marino at a glance
The numbers and facts you need before you dial.
What is the country code for San Marino?
San Marino's own country code is +378 — but because the republic is landlocked inside Italy and its phone network is woven into Italy's, the very same lines also answer to +39 0549, the historic Sammarinese area code carried within the Italian plan. +378 is the dedicated international code; plenty of carriers still route the territory through +39 0549. Both reach the same place — which is exactly why people get them tangled.
Code +378 was assigned to San Marino by the ITU under the E.164 plan. The “+” means “dial your local international exit code”; on a mobile, press and hold 0 to type it.
All four mean the same thing — they connect your call to San Marino.
How to call San Marino from anywhere
Reaching San Marino is refreshingly plain: exit code, then 378, then the local number — there's no trunk prefix to peel off, so what you see is what you dial.
Full example: +378 XXX XXXX — drop the local leading 0 when calling from abroad.
San Marino phone number format explained
Sammarinese numbers stretch anywhere from six to ten digits, and the opening digit does the sorting: 0, 8, or 9 marks a landline, 6 a mobile, 5 an IP line, and 7 a premium-rate number. In a country this compact, that single-digit signal is the whole addressing scheme.
Landline
typically the 0549 prefix + subscriber number. Example: +378 0549 123 456.
Mobile
begins with 6. Example: +378 66 12 34 56. (Italian operators also serve the territory directly.)
San Marino area codes — major cities
Drop the local leading 0 when calling from abroad.
| City | Region | Area code |
|---|---|---|
| 0549 | Fixed-line access (via Italy +39 0549) | |
| 0xxx / 8xxx / 9xxx | Landline numbers | |
| 6xxx | Mobile numbers | |
| 5xxx | IP telephony | |
| 7xxx | Premium-rate |
San Marino mobile network prefixes
The prefix after +378 tells you which network issued the SIM — though number portability means it no longer guarantees the operator.
San Marino Telecom (SMT)
Telefonia Mobile Sammarinese (TMS)
TIM San Marino
San Marino time zone
San Marino keeps Central European Time (CET), UTC+1, and moves to CEST (UTC+2) from late March to late October. Being an island of Italy, its clock naturally tracks Italy and the wider EU to the minute — there's no separate Sammarinese time to reconcile.
09:00–17:00 CET sits squarely inside European business hours; a CET morning catches the US East Coast in its late afternoon. Since the enclave shares Italy's clock, anyone already calling Italy needs no adjustment at all.
Common mistakes when calling San Marino
Almost every failed international call is a formatting issue, not a network issue.
Treating +378 and +39 0549 as a choice you have to make
this is the San Marino muddle. They're two valid doors to the same network: +378 is the republic's own international code, while +39 0549 reaches it through Italy. Either works; just don't bolt them together into +378 0549 or assume one is "wrong."
Adding a trunk 0
there's no national trunk prefix, so never wedge an extra 0 after +378.
Applying Italy's dialing rules wholesale
San Marino runs its own +378 plan despite the shared infrastructure.
Clipping digits
Sammarinese numbers run 6 to 10 digits; dial the full local number.
Reaching for 011 on a mobile abroad
just dial +378 (or +39 0549) directly.
Tips to reduce the cost of calling San Marino
Hold a San Marino (or +39 0549) virtual number so calls come in at local rates rather than international ones.
Carry traffic over VoIP/SIP instead of premium international IDD.
Traveling there? An Italian eSIM covers the enclave outright, since Italian networks blanket the territory.
Keep calls inside CET business hours to cut down on missed-call retries.
Why businesses get a San Marino virtual number
Because the republic sits inside Italy, a +378 (or +39 0549) line gives you a double footprint at once — credibility inside the enclave and recognition across the Italian region that surrounds it. 6 cards:
Higher answer rates
Higher answer rates — a recognizable local number lifts pickups in a tight-knit market.
Familiar on sight
Familiar on sight — customers read it as a Sammarinese or Italian number, not a foreign one.
Cheaper inbound
Cheaper inbound — pull calls onto VoIP instead of premium international rates.
One routing hub
One routing hub — forward every +378 call to any team worldwide.
Office-free reach
Office-free reach — operate in San Marino without a local address.
Real PSTN presence
Real PSTN presence — a genuinely dialable Sammarinese footprint.
San Marino virtual numbers with My Country Mobile
My Country Mobile provisions real Sammarinese DIDs — +378 or +39 0549 — with enterprise voice and full API control, so you can serve the enclave and surrounding Italy from a single line. 9 feature bullets:
Local DIDs in major area codes — provisioned in minutes
Call forwarding to any mobile, landline, SIP endpoint, or softphone worldwide
HD voice with G.711, G.729, Opus & AMR-WB — auto-negotiated per call
Sub-150ms latency on major voice corridors via distributed PoPs
99.99% uptime SLA backed by geo-redundant infrastructure & sub-2s failover
WebRTC support for browser-based calling without softphone installs
REST APIs for provisioning, routing & call detail records (CDRs)
Built-in fraud protection with AI anomaly detection & STIR/SHAKEN
24/7 network monitoring and dedicated support
How to get your San Marino virtual number
Most businesses are live within hours, not days.
Choose a +378 (or +39 0549) number from available inventory.
Verify your account and clear documentation.
Set routing — SIP, app, or PSTN forwarding.
Switch it live and start taking +378 calls.
Other country dialing guides
More country codes worth bookmarking.
Get a San Marino virtual number with MCM
One line, two front doors — claim a +378 (or +39 0549) number today.
San Marino +378 — FAQ
Is +378 the same as Italy's +39 0549?expand_more
They reach the same network, but they aren't interchangeable strings. +378 is San Marino's own international code; +39 0549 routes the territory through Italy. Use one or the other — never combine them.
Do I have to dial through Italy to reach San Marino?expand_more
No. +378 is the dedicated code and works on its own; +39 0549 is simply an alternative path some carriers use.
Why is a microstate inside Italy given its own code?expand_more
San Marino is an independent republic, so it holds its own +378 even though its network is interwoven with Italy's.
Is there a trunk 0 to add or drop?expand_more
No — San Marino has no national trunk prefix, so don't insert an extra 0 after +378.
How do I call San Marino from the US?expand_more
Dial 011, then 378, then the local number.
What digit starts a Sammarinese mobile?expand_more
The digit 6.
Does San Marino change clocks for summer?expand_more
Yes — CET (UTC+1) becomes CEST (UTC+2), in lockstep with Italy and the EU.
Can my business get a San Marino number remotely?expand_more
Yes — MCM offers +378 and +39 0549 DIDs with HD voice and full APIs, routed to your team anywhere.