UK Area Code Finder
Quick and easy telephone dialling code information
Monaco uses the country code +377
From the United Kingdom you need to dial:
then the full national number
Dialled from the UK as: 00 377 23456789
Sometimes, the number you want to call may already be written out including the +377 country code. For example:
In such a case, you just replace the '+' with the UK international access code of 00. The example above would be dialled as: 00 377 23456789.
To call a United Kingdom landline or mobile phone from Monaco, dial 00 44, then the UK number without its leading zero.
For example, the UK number