Bhutan Area Country Phone Code
+975
How to dial a phone number in Bhutan?
From outside Bhutan, a caller would dial their international call prefix (typically 00 in Europe and 011 in North America), followed by 975 (the country code for Bhutan), then the 2-3 digit area code of the place you're calling minus the trunk code '0', and finally the local number minus the trunk code '0'.