UK Area Code Finder
Quick and easy telephone dialling code information
Leichtenstein uses the country code +423.
From the United Kingdom you need to dial:
then the full national number
Dialled from the UK as: 00 423 2345678
Sometimes, the number you want to call may already be written out including the +423 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: 00 423 2345678.
To call a United Kingdom landline or mobile phone from Leichtenstein, dial 00 44, then the UK number without its leading zero.
For example, the UK number