Calling Tonga: telephone code and dialing format
Tonga's international calling code is +676. Learn how to build the dialing sequence from abroad and which details to confirm before you place the call.
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Tonga's country calling code
The international telephone calling code for Tonga is +676. This is the code listed for Tonga in a public table of country calling codes consulted in November 2026.
The code applies at the country level. It identifies the Kingdom of Tonga as the destination of an international call, not any particular island, town or district within it. The source consulted does not describe how Tonga's domestic numbers are structured internally, so this guide does not say whether any part of a Tongan subscriber number corresponds to a specific location.
How to dial a Tongan number from another country
An international call to Tonga has three parts, in this order: the international access prefix used in the country you are calling from, the country code 676, and the subscriber's number in Tonga.
[INTERNATIONAL ACCESS PREFIX] 676 [SUBSCRIBER NUMBER]The international access prefix depends on where you are calling from, and no origin was specified for this guide. Many countries use 00, and countries in the North American Numbering Plan use 011, but these are only common examples. Confirm the correct prefix for your own country or carrier before dialing.
On most mobile phones you can avoid the origin-dependent prefix by entering the plus sign in its place. The phone or network then substitutes the correct access prefix for your location.
+676 [SUBSCRIBER NUMBER]What to confirm before calling
The evidence available for this guide confirms only the country code. These details are not covered and should be checked with the person you are calling, a current directory listing, or your telephone provider:
- Trunk prefix: whether Tongan numbers are ever written with a leading domestic prefix that must be dropped when dialing from abroad.
- Number length: how many digits a valid Tongan subscriber number has, and whether this differs between landlines and mobile phones.
- Domestic dialing: how to call a number from within Tonga, which may differ from the international format shown here.
- Costs and availability: international rates and whether your plan allows calls to Tonga.
If you have a Tongan number written in an unfamiliar format, the safest approach is to ask the recipient for their number in full international form, beginning with +676, and dial it exactly as given.