How a Vietnamese mobile number is built
Every Vietnamese mobile number is 9 digits after the +84 country code,
or 10 with the domestic trunk 0: 0912 345 678 becomes
+84 912 345 678 from abroad. Mobiles start with 3, 5, 7, 8, or 9.
Numbering is managed by the Vietnam Telecommunications Authority.
The 2018 switch to 10 digits
Until 2018 many Vietnamese mobiles had 11 digits. Between September 2018 and
mid-2019, around 60 million of them were shortened to 10 digits with new
prefixes: Viettelโs 0162-0169 became 032-039, MobiFoneโs 0120
became 070, VinaPhoneโs 0123 became 083, and so on. Older contact
lists and test fixtures still sometimes hold the 11-digit forms, which are no
longer valid.
Operator prefixes at a glance
- Viettel -
032-039,086,096-098 - MobiFone -
070,076-079,090,093 - VinaPhone -
081-085,088,091,094 - Vietnamobile and Gmobile -
05Xranges
This generator picks from the Viettel, MobiFone, and VinaPhone blocks.
Vietnam phone number format and example (+84)
- Example (fake):
+84 325 550 000 - International:
+84 XXX XXX XXX - Domestic:
0XXX XXX XXX- the leading0is dropped from abroad. - Landlines use area codes such as
024for Hanoi and028for Ho Chi Minh City. This generator produces mobile numbers only.
A note on the โ555โ in these numbers
Vietnam has no official block of fictional phone numbers. The 555 after the
prefix is this siteโs own marker to make generated numbers read as test data.
They pass format checks but are not guaranteed to be unassigned.
FAQ
Will a generated number verify on Zalo or MoMo? No. Both send a code to a real SIM, and a dummy number has no SIM behind it. Use generated numbers to fill and test the form, not to pass a real verification step.
Are 11-digit Vietnamese mobile numbers still valid?
No. Since the 2018-2019 conversion, all mobiles are 10 digits domestically. An
old 016X number now starts with 03X.
What you can use them for
- Filling phone fields while testing signup, checkout, or profile forms
- Seed data for a database or a demo environment
- Screenshots, tutorials, and UI mockups that need a realistic number
- Example numbers in documentation
What they are not
These numbers cannot receive SMS or OTP codes. They are not temporary, virtual, or disposable inbox numbers. If you need to actually receive a verification code in Vietnam, you need a real SIM or a paid virtual number service - this is the wrong tool for that.
Is it legal to use a fake phone number?
Yes, for testing, demos, documentation, and mockups. Using any number - fake or real - to impersonate someone, commit fraud, or get around a verification step you're required to complete is not.