Monaco country code, +377 explained.
Everything you need to call Monaco with Twiching — full dialing format, step-by-step guide, and Tier-1 CLI routes that land every call.
Monaco
Monaco · Europe
· COUNTRY INFO · VERIFIED
ISO Alpha-2
MC
Capital
Monaco
Region
Europe
Timezone
UTC+1
· DIALING GUIDE · VERIFIED
FULL DIAL FORMAT
011 · +377 · XXXXXXXX
How Monaco numbers break down
A complete number to Monaco follows this pattern. Twiching adds the exit and country codes automatically when you dial from the app.
EXIT CODE
Dial from the US/Canada to leave the country.
COUNTRY CODE
Routes the call directly into Monaco.
LOCAL NUMBER
The subscriber's local number.
COMPLETE NUMBER FORMAT
011 · +377 · XXXXXXXX
Monaco on the map
Monaco · Europe
ROUTE
Tier-1 Direct
CLI
Verified
ASR
60%+ min
Get a business phone number in Monaco
A Twiching virtual number in Monaco carries local +377 caller ID over a Tier-1 SIP trunk, so outbound calls land as a recognisable domestic number instead of an unfamiliar international one. Provisioning takes minutes, not a carrier contract.
Local +377 caller ID
Calls display a recognisable Monaco number instead of an unfamiliar international one.
SIP trunking
Route your existing PBX or softphone through Twiching's Tier-1 trunk — no hardware swap.
Minutes to provision
Numbers activate in the dashboard the same day, with no on-the-ground carrier contract.
+377
Monaco · ready to provision today
Why businesses route Monaco calls through Twiching
The same Tier-1 interconnects, STIR/SHAKEN attestation, and delivery-rate guarantees that cover major markets apply to Monaco calls too, with no reduced service tier.
Monaco
+377
191
Countries in directory
MONACO INCLUDED
99.97%
Call delivery rate
STIR/SHAKEN
500+
Carrier interconnects
TIER-1 DIRECT
60%+
Guaranteed ASR
REAL-TIME ROUTING
How Monaco phone numbers are structured
Numbering Format
COUNTRY
+377
LOCAL
XXXXXXXX
Monaco uses a closed numbering plan under country code +377: subscribers are reached with a single 8-digit number after the country code, with no separate area code to dial.
Carriers & language
With 97% internet penetration, Monaco is covered by 3 major carriers — Monaco Telecom, Orange (roaming), SFR (roaming). VoIP is permitted and regulated by AMSN (Autorité Monégasque de Sécurité Numérique). IVR prompts, SMS copy, and business hours here should account for the local language (French) and currency (EUR).
Europe context
Most European numbering plans follow ITU-T E.164 with a national trunk prefix that is dropped for international dialing, and cross-border VoIP is widely supported across the region.
Skipping the exit code
Reaching Monaco from the US requires the 011 exit code ahead of +377 — skip it and the call won't connect.
Adding an area code that doesn't exist
Don't insert an area code for Monaco: it's a closed plan, so +377 plus the 8-digit number is the whole address.
Ignoring the time difference
Monaco runs on UTC+1. Check local hours before dialing so calls don't land outside business time.
Compliance, carriers & rates for Monaco
Permitted — AMSN regulated
Regulated by AMSN (Autorité Monégasque de Sécurité Numérique)
AMSN (Autorité Monégasque de Sécurité Numérique) permits VoIP in Monaco without special licensing for compliant operators, which keeps setup straightforward — no separate approval process stands between signing up and placing the first call.
- VoIP services in Monaco are regulated by AMSN under the Sovereign Ordinance on Electronic Communications.
- Monaco Telecom holds significant market authority; third-party VoIP providers must comply with interconnection rules.
- Data protection follows French GDPR implementation principles given Monaco's proximity and legal alignment with France.
Direct Tier-1 interconnect with Monaco Telecom — no wholesale transit in between.
US → Monaco
$0.025/min
Monaco → US
$0.018/min
Billed per second, not rounded to the minute
How businesses use a Monaco number
Local MC caller ID
Present a Monaco +377 number so prospects in Monaco and nationwide recognise the call and are more likely to answer.
Direct routing, not transit
Monaco traffic rides Twiching's direct interconnect with Monaco Telecom, skipping the lower-tier wholesale transit that can degrade call quality.
No missed calls after hours
Scheduling support and sales coverage around UTC+1 keeps a Monaco number answered during the local business day, not the middle of the night elsewhere.
One platform, Monaco included
Monaco is provisioned the same way as every other Twiching market — no separate onboarding process for a new country in the directory.
FAQ
Calling Monaco — frequently asked questions
Yes — calls to Monaco are billed per second, not rounded up to the minute, starting at $0.025/min. Per-second billing means a 45-second call costs less than a full minute, unlike carriers that round every call up.
The subscriber portion of a Monaco number is 8 digits, after the country code. That's the part that identifies the specific line once the call has been routed to the right network.
Dial 011 (US exit code), then 377 (the Monaco country code), then the 8-digit subscriber number. There's no area code or trunk prefix to add in between — the subscriber number follows the country code directly.
Calls from the US to Monaco start at $0.025/min on Twiching, billed per second on Tier-1 routes. That's the same rate whether the call lands on a mobile or fixed-line number in the country.
3 major networks serve Monaco: Monaco Telecom, Orange (roaming), SFR (roaming). Twiching interconnects directly with these carriers over Tier-1 routes rather than relying on third-party transit.
The country code for Monaco is +377. To call Monaco from the United States, dial 011, then 377, then the local number. Twiching adds the 011 and +377 automatically when you dial from the app, so you only need to enter the local number itself.
Full country code directory
The rest of Europe is one click away — each country page below follows the same format as Monaco: dial code, numbering plan, carriers, and current rates. All 190 other countries are listed below, Europe first.
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Compliance with applicable regulations required.