Hung Yen Area Code
Area code for Hung Yen, Vietnam: 321 • 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*  |
Hung Yen | +84 321 [Local number]** |
| Vietnam*** |
Hung Yen | (0)321 [Local number] |
| Vietnam |
Abroad | 00 [Country Code] [Area Code] [Local number] |
Local time in Hung Yen (in moment when this page is generated):
Sunday, 2025-12-07, 19:47 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 321
*gads*