The 84 country code belongs to Vietnam. Whether you're calling family in Ho Chi Minh City, doing business in Hanoi, or reaching friends in Da Nang, the +84 prefix connects you to Vietnam.

Quick Answer: The country code +84 is for Vietnam. Vietnamese phone numbers have 9-10 digits after the +84 prefix. Always drop the leading 0 when calling internationally. For example, a mobile number like 090 123 4567 becomes +84 90 123 4567.

How to Call Vietnam: Quick Reference

The dialing format varies depending on where you're calling from. Here's a quick-reference table for countries with large Vietnamese communities.

Calling From Dialing Format
US/Canada Mobile +84 [number without leading 0]
US/Canada Landline 011-84-[number without leading 0]
Australia 0011-84-[number without leading 0]
United Kingdom (UK) 00-84-[number without leading 0]
Germany 00-84-[number without leading 0]
France 00-84-[number without leading 0]
Japan 010-84-[number without leading 0]
South Korea 00700-84-[number without leading 0]

Vietnam has a large diaspora, especially in the US (over 2 million), Australia, France, and other countries. Calls to Vietnam are common from these locations.

Understanding Vietnamese Phone Numbers

Vietnamese phone numbers follow a consistent structure, though understanding the trunk prefix is important.

The Trunk Prefix (0)

Vietnam uses a leading 0 as a trunk prefix for domestic calls. When calling internationally:

  • Drop the leading 0 from any Vietnamese number
  • Domestic format: 090 123 4567
  • International format: +84 90 123 4567

This is the most common mistake when dialing Vietnam. If your call isn't connecting, check whether you've accidentally left the 0 in place.

Mobile Numbers

Vietnamese mobile numbers are the most common type you'll encounter:

  • Length: 9 digits after +84 (10 digits with the domestic 0)
  • Starting Digits: Mobile numbers start with 3, 5, 7, 8, or 9 after the trunk prefix
  • Common Prefixes: 090, 091, 093, 070, 076, 077, 078, 079, 081, 082, 083, 084, 085, 032, 033, 034, 035, 036, 037, 038, 039, 052, 056, 058, 059
  • Example: 090 123 4567 becomes +84 90 123 4567

Vietnam has several mobile operators including Viettel, Mobifone, Vinaphone, and Vietnamobile, each with their own number ranges.

Landline Numbers

Vietnamese landline numbers use geographic area codes:

  • Structure: 0 + area code + local number
  • Starting Digits: Landlines start with area codes beginning with 2
  • Example: Hanoi number 024 1234 5678 becomes +84 24 1234 5678

Vietnam Area Codes Reference Table

When calling a landline in Vietnam, the first digits after the trunk prefix indicate the geographic region. Here are area codes for major Vietnamese cities:

City Area Code International Format
Hanoi 24 +84 24 xxxx xxxx
Ho Chi Minh City 28 +84 28 xxxx xxxx
Da Nang 236 +84 236 xxx xxxx
Hai Phong 225 +84 225 xxx xxxx
Can Tho 292 +84 292 xxx xxxx
Nha Trang 258 +84 258 xxx xxxx
Hue 234 +84 234 xxx xxxx
Vung Tau 254 +84 254 xxx xxxx
Dong Nai 251 +84 251 xxx xxxx
Binh Duong 274 +84 274 xxx xxxx

Note: Mobile phones are far more common in Vietnam than landlines. Most numbers you'll encounter will be mobile numbers starting with 03, 05, 07, 08, or 09.

Mobile vs. Landline: How to Tell the Difference

You can tell whether a +84 number is mobile or landline by looking at the digits after the trunk prefix:

  • Starts with 3, 5, 7, 8, or 9 (after 0): Almost always a mobile number (e.g., 090, 093, 070)
  • Starts with 2 (after 0): A landline number with an area code (e.g., 024 for Hanoi)

This distinction matters because calling rates to mobile and landline numbers may differ.

Dialing Examples

Here are practical examples for calling different types of Vietnamese numbers:

Example 1: Calling a Ho Chi Minh City Mobile from the US

  • Vietnamese Number: 090 123 4567
  • From a US Mobile: +84 90 123 4567
  • From a US Landline: 011 84 90 123 4567

Example 2: Calling a Hanoi Landline from Australia

  • Vietnamese Number: 024 1234 5678
  • From Australia: 0011 84 24 1234 5678

Example 3: Calling a Da Nang Business from the UK

  • Vietnamese Number: 0236 123 4567
  • From the UK: 00 84 236 123 4567

Example 4: Calling from Japan

  • Vietnamese Mobile: 093 456 7890
  • From Japan: 010 84 93 456 7890

Best Times to Call Vietnam

Vietnam operates on Indochina Time (ICT), which is UTC+7 year-round. Vietnam does not observe daylight saving time.

Your Location Time Difference Call Vietnam 9 AM - 5 PM
US East Coast (EST) Vietnam is 12 hours ahead 9 PM - 5 AM EST (previous day)
US West Coast (PST) Vietnam is 15 hours ahead 6 PM - 2 AM PST (previous day)
UK (GMT) Vietnam is 7 hours ahead 2 AM - 10 AM GMT
Australia (AEST) Vietnam is 3 hours behind 12 PM - 8 PM AEST
Japan (JST) Vietnam is 2 hours behind 11 AM - 7 PM JST
France (CET) Vietnam is 6 hours ahead 3 AM - 11 AM CET

Tip: For US callers, evening and night calls work best for reaching Vietnam during business hours. If you call at 9 PM EST, it will be 9 AM the next day in Vietnam.

Common Mistakes to Avoid

Here are the most common mistakes when dialing the 84 country code:

  • Keeping the leading 0: The most frequent error. +84 090... is wrong; +84 90... is correct.
  • Confusing +84 with +86: +84 is Vietnam, while +86 is China. These neighboring countries have similar codes.
  • Wrong number length: Vietnamese mobile numbers should be 9 digits after +84 (without the trunk 0).
  • Mixing up area codes: Hanoi is 24, Ho Chi Minh City is 28. Don't confuse them.
  • Forgetting time zones: Vietnam is 12 hours ahead of US Eastern Time. An afternoon call from America arrives in the middle of the night in Vietnam.

Cheapest Ways to Call +84 Numbers

International calls to Vietnam don't have to be expensive. Here are your options:

  • VoIP Services: Services like CallSky.io offer low per-minute rates to Vietnam. Check our Vietnam calling rates.
  • Messaging Apps: Zalo is the most popular app in Vietnam, though WhatsApp and Viber also work for free calls over WiFi or data.
  • International Calling Plans: Some carriers offer Asia calling bundles. Check our guide on how to make international calls.

Prefer calling over WiFi? See our guide to the best apps for WiFi calling.

Frequently Asked Questions (FAQ)

What country has the +84 country code?

The +84 country code is for Vietnam. Any call from a number starting with +84 originates from Vietnam.

How many digits is a Vietnamese phone number?

Vietnamese phone numbers have 9-10 digits after the +84 country code. Mobile numbers are typically 9 digits, while landlines vary based on the area code.

What is the area code for Hanoi?

The area code for Hanoi is 24. For international calls, dial +84 24 followed by the local number.

What is the area code for Ho Chi Minh City?

The area code for Ho Chi Minh City (Saigon) is 28. Internationally, dial +84 28 followed by the local number.

How do I call Vietnam from the USA?

From a mobile phone, dial +84 followed by the Vietnamese number without the leading 0. From a landline, dial the US exit code 011, then 84, then the number without the leading 0.

Do I drop the 0 when calling Vietnam internationally?

Yes, always drop the leading 0. Vietnamese domestic numbers start with 0 (like 090 for mobile or 024 for Hanoi), but from abroad, replace the 0 with +84. So 090 123 4567 becomes +84 90 123 4567.

Is +84 Vietnam or China?

+84 is the country code for Vietnam. The country code for China is +86. These are neighboring countries with similar codes.

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