Vietnam country code
+84 is the country code of Vietnam. From the US, dial 011 84 912 345 678; from a mobile phone, dial +84 912 345 678.
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How to dial Vietnam
Dial the exit code of the country you are calling from, then 84 without the plus sign, then the local number. Exit codes from ten large calling countries:
The example is a mobile number in Vietnam, written locally as 0912 345 678. Leave out the leading 0 when you dial it with the country code.
Time in Vietnam and the best time to call
Vietnam is on UTC+7. Compared with New York its clock is +12 h, with London +7 h and with Dubai +3 h (today's offsets, daylight saving included).
Vietnam does not change its clocks for daylight saving, so the offset stays UTC+7 all year.
Business hours in Vietnam run 09:00–18:00 local time on working days. On other clocks that is:
The weekend in Vietnam is Saturday and Sunday.
How numbers in Vietnam are built
A number in Vietnam is the country code +84 followed by a national number of 9 or 10 digits. The trunk prefix, where there is one, is dropped after the code.
Written locally as 0912 345 678, an example mobile number in Vietnam is dialed as +84 912 345 678 from abroad.
To call out of Vietnam, dial 00, then the other country's code and number. On a mobile phone you can type + instead of 00.
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Right from your browser, no app or SIM card. Charged per started minute, with no connection fee.
Prices checked October 30, 2026.
A call or message from +84 you don't recognize
The country code shows which country's numbering plan a number is registered in. It doesn't show who is calling, and caller IDs can be spoofed, so a +84 number isn't proof that the person is in Vietnam.
- Don't call back an unfamiliar international number, especially after a single ring. A missed call that tempts you to return it is a known callback trap, and a call to a premium-rate number can cost far more than a normal one.
- Never share verification codes, passwords or card details with someone who contacts you unprompted, whichever country the number appears to be from.
- If calls or messages keep coming, block the number and report it through your mobile carrier.
- Most calls from Vietnam are ordinary calls from family, friends, colleagues and businesses. If you are expecting one, save the number once the person has confirmed it.
Frequently asked questions
What is the country code for Vietnam?
The country code for Vietnam is +84. From abroad, dial your exit code (00 from most countries, 011 from the US and Canada), then +84 without the plus sign, then the local number. Written locally as 0912 345 678, an example mobile number in Vietnam is dialed as +84 912 345 678 from abroad.
What's the exit code to dial Vietnam from a mobile?
On a mobile phone you can skip exit codes altogether: type +84 and then the local number. From a landline, dial 011 from the US or Canada, 00 from the UK and most of Europe, or your own country's exit code first.
Do I need to drop the leading 0 when dialing Vietnam?
Yes. Leave out the leading 0 after the country code: dial +84, then the rest of the number.
What time is it in Vietnam, and when is a good time to call?
Vietnam is on UTC+7. Business hours there (09:00–18:00) are 02:00–11:00 UTC, 21:00–06:00 in New York and 02:00–11:00 in London.
How many digits is a phone number in Vietnam?
A number in Vietnam has 9 or 10 digits after the country code +84, not counting a leading trunk digit.
How much does it cost to call Vietnam?
With QuikRing a call to Vietnam costs $0.23/min to a mobile and $0.23/min to a landline, charged per started minute. You call from your browser, so there is no SIM card, roaming plan or app to set up.
Who is calling me from +84?
The code shows which country's numbering plan a number belongs to, not who is calling, and caller IDs can be spoofed. Don't call back an unknown number, block it if it keeps calling, and report it through your mobile carrier.