São Tomé & Príncipe country code, +239 explained.
Everything you need to call São Tomé & Príncipe with Twiching — full dialing format, step-by-step guide, and Tier-1 CLI routes that land every call.
São Tomé & Príncipe
São Tomé · Africa
· COUNTRY INFO · VERIFIED
- ISO Alpha-2
- ST
- Capital
- São Tomé
- Region
- Africa
- Timezone
- UTC+0
· DIALING GUIDE · VERIFIED
FULL DIAL FORMAT
011 · +239 · XXXXXXX
How São Tomé & Príncipe numbers break down
A complete number to São Tomé & Príncipe 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 São Tomé & Príncipe.
LOCAL NUMBER
The subscriber's local number.
COMPLETE NUMBER FORMAT
011 · +239 · XXXXXXX
São Tomé & Príncipe on the map
São Tomé · Africa
ROUTE
Tier-1 Direct
CLI
Verified
ASR
60%+ min
How to call São Tomé & Príncipe
Click any step — watch the full dial string build piece by piece.
FULL NUMBER FORMAT
011 · +239 · XXXXXXX
Twiching automatically adds the exit and country codes — just enter the local number.
São Tomé & Príncipe —
connected across every carrier.
191
Countries in directory
SÃO TOMÉ & PRÍNCIPE INCLUDED
99.97%
Call delivery rate
STIR/SHAKEN
500+
Carrier interconnects
TIER-1 DIRECT
60%+
Guaranteed ASR
REAL-TIME ROUTING
São Tomé & Príncipe
Africa · ST
São Tomé & Príncipe numbering plan & how to dial
São Tomé & Príncipe uses a closed numbering plan under country code +239: subscribers are reached with a single 7-digit number after the country code, with no separate area code to dial.
São Tomé & Príncipe has 42% internet penetration and is served by 3 major mobile networks (CST (Companhia Santomense de Telecomunicações), Unitel T+, Africell STP). VoIP is permitted and regulated by Agência Geral de Regulação (AGER). The local currency is São Tomé and Príncipe Dobra and the primary language is Portuguese, which shape IVR prompts, SMS content, and business-hours handling.
Across African markets, mobile-first numbering dominates and Tier-1 interconnects are the key to consistent call delivery and CLI presentation.
Skipping the exit code
From the US you must dial 011 before the +239 country code to reach São Tomé & Príncipe.
Adding an area code that doesn't exist
São Tomé & Príncipe uses a closed plan — dial the +239 country code then the 7-digit subscriber number directly, with no area code.
Ignoring the time difference
São Tomé & Príncipe runs on UTC+0. Check local hours before dialing so calls don't land outside business time.
Permitted — AGER regulated
Regulated by Agência Geral de Regulação (AGER)
- AGER regulates all electronic communications in São Tomé & Príncipe and requires licensing for VoIP services.
- International service providers must obtain gateway authorization from AGER before terminating traffic.
- Consumer protection and CLI transparency rules apply to virtual number providers operating in the country.
US → São Tomé & Príncipe
$0.40/min
per minute
São Tomé & Príncipe → US
$0.30/min
per minute
Business calling to São Tomé & Príncipe
Local ST caller ID
Present a São Tomé & Príncipe +239 number so prospects in São Tomé and nationwide recognise the call and are more likely to answer.
Africa outbound & support
Run sales and support lines into São Tomé & Príncipe over Tier-1 routes that interconnect with networks like CST (Companhia Santomense de Telecomunicações).
Follow-the-sun coverage
Staff São Tomé & Príncipe hours (UTC+0) with routing that sends calls to the right team at the right local time.
FAQ
Calling São Tomé & Príncipe — frequently asked questions
The country code for São Tomé & Príncipe is +239. To call São Tomé & Príncipe from the United States, dial 011, then 239, then the local number.
São Tomé & Príncipe uses a 7-digit subscriber number after the +239 country code, with no separate area code.
Yes. VoIP is permitted in São Tomé & Príncipe, regulated by Agência Geral de Regulação (AGER), so businesses can run cloud numbers and SIP termination on compliant routes.
Dial 011 (US exit code), then 239 (the São Tomé & Príncipe country code), then the 7-digit subscriber number.
The major networks in São Tomé & Príncipe are CST (Companhia Santomense de Telecomunicações), Unitel T+, Africell STP. Twiching interconnects with Tier-1 carriers for direct delivery to these networks.
Twiching rates to São Tomé & Príncipe start at $0.40/min per minute (and $0.30/min per minute from São Tomé & Príncipe to the US), billed per second on Tier-1 routes.
Yes. Twiching provisions São Tomé & Príncipe virtual numbers with local +239 caller ID for calls and, where supported, SMS — useful for sales, support, and building local market presence.
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