Guam · GUM
Tamuning dialing code
Tamuning · Tamuning
Dialing code
+1671 646
From abroad
+1671 646 123-4567
Dial +1671, then the city code 646, then the phone number without the leading zero.
Within the country
1646 123-4567
Dial 1646 followed by the phone number.
How to call Tamuning?
To call Tamuning in Guam from abroad, dial the international code +1671, followed by the city code 646, then the local number without the leading zero.