VN
How to Call Vietnam from the United States
Country code +84 — Dial 011 84 91X XXX XXX from a US landline or +84 91X XXX XXX from a mobile phone.
What to Dial
- 1Dial 011 from a US landline, or + from a mobile (hold the 0 key).
- 2Dial 84, the country code of Vietnam.
- 3Dial the number: 9 digits for mobiles and 10 for landlines, without the leading 0 used for calls inside Vietnam.
| Calling a… | Written in Vietnam | From a US landline | From a cell phone |
|---|---|---|---|
| Mobile | 091X XXX XXX |
011 84 91X XXX XXX |
+84 91X XXX XXX |
| Landline (Phu Tho province) | 0210 XXXX XXX |
011 84 210 XXXX XXX |
+84 210 XXXX XXX |
X stands for any digit. Mobile numbers start with 01, 03, 05, 07, 08 or 09. More number types: Vietnam phone number format.
Mobile or Landline?
Vietnam had 128 mobile subscriptions and 2.6 landlines per 100 people in 2024. Most people you call will be on a mobile, so ask for their mobile number and check what your plan charges for calls to Vietnam mobiles.
Source: World Bank (ITU).
Calling Tips for Vietnam
Best Time to Call
To reach someone between 9 AM and 8 PM in Hanoi, call between 9:00 PM–8:00 AM EST (6:00 PM–5:00 AM PST). Vietnam doesn’t change its clocks, so the gap moves by an hour when the US does.
Vietnam is on UTC+7, 12 hours ahead of US Eastern Time right now.
Cost Saving Tips
- VoIP services such as Google Voice or Vonage usually charge less per minute than a carrier's standard international rate.
- WiFi calling apps (WhatsApp, Viber, FaceTime) are free when both parties have the app.
- Check your carrier's international plan — many offer add-on packages.