Hanoi Area Code
Area code for Hanoi, Vietnam: 4 • Click on number to see if there are other places in our database with same area code.
International calling code for Vietnam is: 84
How to Dial?
| Calling from | Calling to | Dialing example |
|---|---|---|
Abroad*  |
Hanoi | +84 4 [Local number]** |
| Vietnam*** |
Hanoi | (0)4 [Local number] |
| Vietnam |
Abroad | 00 [Country Code] [Area Code] [Local number] |
Local time in Hanoi (in moment when this page is generated):
Wednesday, 2025-07-16, 14:35 Difference to Greenwich time (GMT) in hours: +07:00 (+07 time zone).
*Some countries have different international call prefix. Find Your country on our site for more details.
**Many phones have international call prefix list, but they show only a plus sign (+).
***Dialing from Vietnam but outside of area code 4
*gads*