HK
Hong Kong Phone Number Format
Country code +852 — Complete guide to Hong Kong phone number formats, mobile and landline structures, and area codes.
How Hong Kong Phone Numbers Are Written
Phone numbers in Hong Kong have 8 digits after the country code +852.
There is no trunk prefix to remove: the number is written the same way at home
(51XX XXXX)
and after the country code (+852 51XX XXXX).
| Country code | +852 |
|---|---|
| Digits after +852 | 8 digits |
| Trunk prefix (domestic calls) | None |
| Mobile numbers start with | 4, 5, 6, 7, 8 or 9 |
| Exit code (to call abroad from Hong Kong) | 00 |
| Dial from the US | 011 852 51XX XXXX |
Mobile vs. Landline Numbers
8 digits after +852, starting with 4, 5, 6, 7, 8 or 9.
51XX XXXX at home+852 51XX XXXX international8 digits after +852.
2123 XXXX at home+852 2123 XXXX internationalHong Kong Number Types
| Type | Starts with | Written at home | International | From the US |
|---|---|---|---|---|
| Mobile | 4, 5, 6, 7, 8 or 9 | 51XX XXXX |
+852 51XX XXXX |
011 852 51XX XXXX |
| Landline | 21–29, 31, 34–39 or 58 | 2123 XXXX |
+852 2123 XXXX |
011 852 2123 XXXX |
| Toll-free | 80 | 800 XXX XXX |
+852 800 XXX XXX |
011 852 800 XXX XXX |
| Premium rate | 90 | 900 XX XXX XXX |
+852 900 XX XXX XXX |
011 852 900 XX XXX XXX |
| Company number (UAN) | — | 3016 XXXX |
+852 3016 XXXX |
011 852 3016 XXXX |
X stands for any digit. Source: libphonenumber metadata (phonenumbers 9.0.40), Google's open numbering data.
Checking a number from Hong Kong? The phone number checker tells you if it is valid, mobile or landline, and gives its international format.
Dialing Tips
- Keep every digit: Hong Kong numbers have no trunk prefix, so dial them after +852 exactly as they are written locally.
-
Use the + notation: From a US mobile phone, use
+852instead of011 852. - Verify the number length: Numbers in Hong Kong have 8 digits after +852. If your call does not connect, check that no digit is missing or doubled.
-
Save contacts in international format: Always store phone numbers with the full
+852prefix so they work from any country.
Hong Kong Phone Number FAQ
How many digits does a phone number in Hong Kong have?
Phone numbers in Hong Kong have 8 digits after the country code +852.
What do mobile numbers in Hong Kong start with?
Mobile numbers in Hong Kong start with 4, 5, 6, 7, 8 or 9, for example 51XX XXXX.
How do I write a phone number from Hong Kong in international format?
Start with +852, then the national number. For example, a mobile number written 51XX XXXX at home becomes +852 51XX XXXX. From a US landline, dial 011 852 51XX XXXX.
What is the toll-free prefix in Hong Kong?
Toll-free numbers in Hong Kong start with 80, for example 800 XXX XXX. Many toll-free numbers can't be reached from abroad.
How do I call the US from Hong Kong?
Dial the exit code 00, then 1 and the 10-digit US number: 00 1 XXX XXX XXXX. From a mobile phone you can use + instead of 00: +1 XXX XXX XXXX.