Vietnam country code, +84 explained.
Everything you need to call Vietnam with Twiching — full dialing format, step-by-step guide, and Tier-1 CLI routes that land every call.
Vietnam
Hanoi · Asia
· COUNTRY INFO · VERIFIED
- ISO Alpha-2
- VN
- Capital
- Hanoi
- Region
- Asia
- Timezone
- UTC+7
· DIALING GUIDE · VERIFIED
FULL DIAL FORMAT
011 · +84 · XX · XXXXXXXX
How Vietnam numbers break down
A complete number to Vietnam follows this pattern. Twiching adds the exit and country codes automatically when you dial from the app.
EXIT CODE
Dial from the US/Canada to leave the country.
COUNTRY CODE
Routes the call directly into Vietnam.
AREA / MOBILE
Regional or mobile prefix — drop the leading 0.
LOCAL NUMBER
The subscriber's local number.
COMPLETE NUMBER FORMAT
011 · +84 · XX · XXXXXXXX
Vietnam on the map
Hanoi · Asia
ROUTE
Tier-1 Direct
CLI
Verified
ASR
60%+ min
How to call Vietnam
Click any step — watch the full dial string build piece by piece.
FULL NUMBER FORMAT
011 · +84 · XX · XXXXXXXX
Twiching automatically adds the exit and country codes — just enter the local number.
Vietnam —
connected across every carrier.
191
Countries in directory
VIETNAM INCLUDED
99.97%
Call delivery rate
STIR/SHAKEN
500+
Carrier interconnects
TIER-1 DIRECT
60%+
Guaranteed ASR
REAL-TIME ROUTING
Vietnam
Asia · VN
Vietnam numbering plan & how to dial
Vietnam's numbering plan is open, sitting under country code +84: a 2-digit prefix followed by a 8-digit local number, 10 digits combined. Numbers are often shown with a leading "0" for domestic use — drop it when dialing in from abroad.
Mobile coverage in Vietnam comes from 3 major networks — Viettel, MobiFone, Vinaphone — with internet penetration at 79%. VoIP is permitted and regulated by Ministry of Information and Communications (MIC). Language (Vietnamese) and currency (VND) both matter here for IVR, SMS, and scheduling support around local business hours.
Asian markets range from fully liberalised to licensed-only VoIP, so compliant routing and correct local caller ID have an outsized effect on answer rates.
Skipping the exit code
From the US you must dial 011 before the +84 country code to reach Vietnam.
Keeping the national trunk "0"
That leading 0 on a Vietnam number is for domestic calls only; leave it out when dialing in after +84.
Ignoring the time difference
Before dialing Vietnam, check the local clock — it runs on UTC+7, and off-hours calls tend to go unanswered.
Permitted — VNPT regulated
Regulated by Ministry of Information and Communications (MIC)
- VoIP is permitted but operators must obtain a license from the MIC.
- The Cybersecurity Law 2018 imposes data localization and user data obligations.
- Operators must maintain lawful interception capability as required by Vietnamese law.
US → Vietnam
$0.012/min
per minute
Vietnam → US
$0.015/min
per minute
More in Asia
Business calling to Vietnam
Local VN caller ID
Present a Vietnam +84 number so prospects in Hanoi and nationwide recognise the call and are more likely to answer.
Asia outbound & support
Run sales and support lines into Vietnam over Tier-1 routes that interconnect with networks like Viettel.
Follow-the-sun coverage
Staff Vietnam hours (UTC+7) with routing that sends calls to the right team at the right local time.
FAQ
Calling Vietnam — frequently asked questions
3 major networks serve Vietnam: Viettel, MobiFone, Vinaphone. Twiching interconnects directly with these carriers over Tier-1 routes rather than relying on third-party transit.
Twiching rates to Vietnam start at $0.012/min, and calls back from Vietnam to the US start at $0.015/min. Both directions are billed per second rather than rounded up to the nearest minute, on Tier-1 routes throughout.
Yes — since Vietnam runs on UTC+7, calls can be routed to the right team based on local business hours there. That's especially useful for support or sales teams covering multiple countries across different time zones from one platform.
Vietnam's local currency is VND, which is worth factoring into any pricing or invoicing shown to customers there. Twiching's own per-minute rates to and from Vietnam are quoted in USD regardless of the local currency.
Over Tier-1 direct interconnects with major local networks like Viettel, rather than lower-quality wholesale transit routes. That direct-carrier approach is what keeps delivery rates and call clarity high.
Yes. Twiching provisions Vietnam virtual numbers with local +84 caller ID for calls and, where supported, SMS. A recognisable local number tends to get answered more often than an unfamiliar international one, which makes it useful for sales, support, and building local market presence.
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