UK Area Code Finder
Quick and easy telephone dialling code information
Cambodia uses the country code +855.
From the United Kingdom you need to dial:
then the full national number minus any leading 0
Dialled from the UK as: 00 855 71 234567
Sometimes, the number you want to call may already be written out including the +855 country code. For example:
In such cases, you just replace the '+' with the UK international access code of 00 and ignore any reference to '(0)'. Both the examples above would be dialled as: 00 855 71 234567.
To call a United Kingdom landline or mobile phone from Cambodia, dial the access code of the chosen telephone company, then 44, then the UK number without its leading zero.
For example, the UK number