Tonga country code, +676 explained.
Everything you need to call Tonga with Twiching — full dialing format, step-by-step guide, and Tier-1 CLI routes that land every call.
Tonga
Nuku'alofa · Oceania
· COUNTRY INFO · VERIFIED
- ISO Alpha-2
- TO
- Capital
- Nuku'alofa
- Region
- Oceania
- Timezone
- Pacific/Tongatapu
· DIALING GUIDE · VERIFIED
FULL DIAL FORMAT
011 · +676 · XXXXXXX
How Tonga numbers break down
A complete number to Tonga follows this pattern. Twiching adds the exit and country codes automatically when you dial from the app.
EXIT CODE
Dial from the US/Canada to leave the country.
COUNTRY CODE
Routes the call directly into Tonga.
LOCAL NUMBER
The subscriber's local number.
COMPLETE NUMBER FORMAT
011 · +676 · XXXXXXX
Tonga on the map
Nuku'alofa · Oceania
ROUTE
Tier-1 Direct
CLI
Verified
ASR
60%+ min
How to call Tonga
Click any step — watch the full dial string build piece by piece.
FULL NUMBER FORMAT
011 · +676 · XXXXXXX
Twiching automatically adds the exit and country codes — just enter the local number.
Tonga —
connected across every carrier.
191
Countries in directory
TONGA INCLUDED
99.97%
Call delivery rate
STIR/SHAKEN
500+
Carrier interconnects
TIER-1 DIRECT
60%+
Guaranteed ASR
REAL-TIME ROUTING
Tonga
Oceania · TO
Tonga numbering plan & how to dial
Tonga's plan is closed: dial country code +676 followed directly by a 7-digit number. There's no area code layer to account for.
Tonga has 41% internet penetration and is served by 2 major mobile networks (Tonga Communications Corporation (TCC), Digicel Tonga). VoIP is permitted and regulated by Tonga Communications Commission (TCC). The local currency is TOP and the primary language is Tongan, which shape IVR prompts, SMS content, and business-hours handling.
Oceania's networks are geographically spread across wide time-zone gaps, so time-aware dialing and resilient international routes matter most here.
Skipping the exit code
Tonga calls from the US need 011 first, then +676 — the exit code isn't optional.
Adding an area code that doesn't exist
There's no area-code layer in Tonga's closed plan — just +676 followed by the 7-digit subscriber number.
Ignoring the time difference
Tonga runs on Pacific/Tongatapu. Check local hours before dialing so calls don't land outside business time.
Permitted — Tonga Communications Corporation regulated
Regulated by Tonga Communications Commission (TCC)
- VoIP is permitted and regulated under the Tonga Communications Act by the Communications Commission.
- Service providers must obtain a licence and meet quality-of-service requirements.
- Consumer rights protections and number portability rules are enforced by the regulator.
US → Tonga
$0.13/min
per minute
Tonga → US
$0.13/min
per minute
More in Oceania
Business calling to Tonga
Local TO caller ID
Present a Tonga +676 number so prospects in Nuku'alofa and nationwide recognise the call and are more likely to answer.
Oceania outbound & support
Run sales and support lines into Tonga over Tier-1 routes that interconnect with networks like Tonga Communications Corporation (TCC).
Follow-the-sun coverage
Staff Tonga hours (Pacific/Tongatapu) with routing that sends calls to the right team at the right local time.
FAQ
Calling Tonga — frequently asked questions
Nuku'alofa is the capital of Tonga. A local +676 number is recognisable to callers there and nationwide, which is part of why presenting local caller ID tends to improve answer rates across the whole country, not just the capital.
Tonga uses a 7-digit subscriber number after the +676 country code, with no separate area code. Since there's no prefix layer to account for, the full dial string is always the same length for every number in the country.
Yes — since Tonga runs on Pacific/Tongatapu, calls can be routed to the right team based on local business hours there. That's especially useful for support or sales teams covering multiple countries across different time zones from one platform.
Over Tier-1 direct interconnects with major local networks like Tonga Communications Corporation (TCC), rather than lower-quality wholesale transit routes. That direct-carrier approach is what keeps delivery rates and call clarity high.
Tonga Communications Commission (TCC) is the regulator for Tonga. Twiching routes calls in line with its rules for compliant, licensed termination, rather than relying on unlicensed grey routes that can be blocked or degraded.
Tonga's ISO 3166-1 alpha-2 code is TO, distinct from its dialing code (+676). The ISO code is used in things like domain names and shipping forms, while the dialing code is what actually routes a phone call.
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