Dial code
+856
To call Laos, dial +, then 856 (the country code for Laos), then the area code (without the initial 0) and the local number.
International call
+ 856 21 1234567
Local call
021 1234567
For local calls within Laos, start with the area code (with the initial 0). In the case above area code is 21 .