How to call Hanoi in Vietnam from United Kingdom:
00 - Exit code when making an international call from United Kingdom
84 - Vietnamese country code for inbound calls
4 - Hanoi city code
00 + 84 + 4 + Local Number - International dialing code format
World time zone information:
The time in United Kingdom is now 04:30:22 AM (04:30:22 AM)
The time in Hanoi Vietnam is now 10:30:22 AM (10:30:22 AM)
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