Tonga Country Code

The country code for Tonga is +676.

Calling code: +676
ISO code: TO · TON
Region: Oceania
Dialling out: 00

How to call Tonga from the US

011+676+local number

011 is the US and Canadian exit code; from a mobile you can dial + instead, anywhere in the world. Tonga has no trunk prefix to drop: dial the local number exactly as it is written.

Example Tonga numbers in international format, as published by the numbering-plan source.
Line type	Dial from abroad
Fixed line	+676 20123
Mobile	+676 7715123

Calling out of Tonga

To call abroad from Tonga, dial 00 before the destination's country code. From a mobile, + works instead.

Scope the Tonga calling code and its dialing rules. Source datasets/country-codes (E.164 + ISO 3166) (ITU-T E.164 + ISO 3166, 2026-07 release) and libphonenumber PhoneNumberMetadata (Google) (libphonenumber master, 2026-08 snapshot). Updated 25 August 2026. Example numbers are the numbering plan's own published examples, not real subscriber lines.