How to validate phone number formats for a specific country or region?

Different countries or regions use different phone number formats. To help you to validate phone number formats used in a specific country or region, FYIcenter.com has designed this online tool. All you need to do is to end a phone number of a specific country/region in the form below, and click the "Validate" button. The validation result will be presented back to you.

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Country/Region:	Vietnam
Phone #

Validation result by FYIcenter.com:

Specified Phone Number: Valid ✔

"24 6269 9919" matches the format of "AA SSSS SSSS"

Most phone numbers in Vietnam are written in the following formats:

   Prefix: long distance or international
   --------------------------------------
   |   Carrier or area code 
   |   --------------------
   |   |   Subscriber number
   |   |   -----------------
   v   v   v
   0   AA  SSSS SSSS    - Local format
  +84  AA  SSSS SSSS    - International format

Most telephone numbers in Vietnam have 10 digits and are written in the format of "AA SSSS SSSS". Here are some examples: 24 6269 9919; 28 3823 9355.

When dialing locally inside Vietnam, the long distance prefix of "0" is required. So the format becomes "0 AA SSSS SSSS".

When dialing from outside of Vietnam, the international dial-in prefix "+84" is required. So the format becomes "+84 AA SSSS SSSS".

When dialing from Vietnam to other countries, the international dail-out prefix "+" or "00" required.

To validate phone number formats for other countries or regions, see our Generic Phone Number Format Validator.

To see phone number examples in Vietnam, try our Test Phone Number Generator.

 

⇒ What Is Trunk or Long Distance Call Prefix?

⇐ Generating Phone Numbers for a Country/Region

⇑ Phone Number Related Terms and Tools

⇑⇑ Phone Number FAQ