Your complete guide to dialling Sao Tome and Principe from São Tomé to anywhere in the world — verified +239 country code, Africa/Sao_Tome time zone, Africa region, ISO references, live local time and weather, plus a step-by-step walkthrough.
Calling
Sao Tome and Principe
+239
São Tomé
Weather
HD voice signal
Alpha-2
ST
Alpha-3
STP
Sao Tome and Principe
ST
2 Digit ISO
+239
Country Calling Code
STP
3 Digit ISO
Capital
São Tomé
Time zone
Africa/Sao_Tome
Weather · São Tomé
Humidity
Wind
Sao Tome and Principe
+239
Capital
São Tomé
Region
Africa
Time zone
Africa/Sao_Tome
Coordinates
0.19°, 6.61°
Numbering zone
Zone 2
Code length
3 digits
Several routes connect you to Sao Tome and Principe (+239) landlines, calling cards and modern VoIP services. Pick the one that fits your call volume and budget.
Dial your exit code (00 from most countries, or 011 from North America), enter +239, then the local Sao Tome and Principe number — dropping any leading 0. Sao Tome and Principe's 3-digit country code puts it in ITU Zone 2 of the global E.164 numbering plan.
Sao Tome and Principe uses a 3-digit country code (Zone 2). Check that the card lists +239 rates explicitly — mobile numbers in Sao Tome and Principe often carry a different per-minute charge than landlines. Factor in the Africa/Sao_Tome time zone when planning the call.
Apps like Skype, WhatsApp and Viber, and business VoIP from TKOS are the cheapest route to Sao Tome and Principe (+239) — routes to Sao Tome and Principe use trans-Atlantic and trans-Indian Ocean cables — latency under 200 ms is typical on a good connection.
The cost of calling Sao Tome and Principe varies depending on the method and service provider you choose. Compare landline, VoIP and calling-card routes side by side.
VoIP · overview
Cheapest route to Sao Tome and Principe — internet-based.
Choose TKOS for business-grade calls to Sao Tome and Principe, or consumer apps like Skype, WhatsApp or Viber for casual chats.
Sign up with an email or phone number, then verify your identity if required.
App-to-app calls are usually free; calls to mobile/landline numbers need a small balance or a subscription plan.
Enter +239 followed by the Sao Tome and Principe subscriber number (drop any leading 0).
VoIP works on phones, laptops, tablets and desk phones wherever you have internet.
If audio drops, try switching from cellular to Wi-Fi or move closer to your router.
Capital
São Tomé
Population
227.7K
Area
964 km²
GDP (USD)
$547.00M
Currency
São Tomé and Príncipe Dobra (STN Db)
Languages
Portuguese
Emergency number
112
Internet TLD
.st
Drive side
Right-hand traffic
Latitude / Longitude
0.19°N / 6.61°E
Time zone
Africa/Sao_Tome
ISO 3166 codes
ST · STP
A complete international number is built from four parts. Here's the anatomy and the dialling order.
Number anatomy
Format follows ITU-T Recommendation E.164 the international public telecommunication numbering plan.
Press + on a mobile (hold the 0 key), or dial 00 from most countries / 011 from North America.
Dial +239. This identifies Sao Tome and Principe on the global telephone network.
Type the first part of the local number. Drop the leading 0 if there is one.
The remaining digits route the call to the specific line in São Tomé or elsewhere.
Need an inbound Sao Tome and Principe number?
TKOS provisions +239 DIDs and termination through direct carrier interconnects.
Whether you're reaching Sao Tome and Principe for business or family, three habits keep every conversation crystal clear and a clean route from TKOS handles the rest.
Sao Tome and Principe routes (Zone 2/Africa) can carry higher jitter — a headset with active noise cancellation compensates for audio artefacts without you needing to do anything.
Trans-Atlantic and Indian Ocean paths to Sao Tome and Principe run 150–200ms — a wired ethernet connection eliminates Wi-Fi jitter that makes longer international routes sound choppy.
Schedule Sao Tome and Principe calls during São Tomé business hours — 09:00–17:00 Africa/Sao_Tome — your contact will be at their desk in a quiet space rather than taking the call on the move.
Built on top of every Sao Tome and Principe (+239) route quality, price, and people you can reach.
TKOS uses direct Africa carrier interconnects to São Tomé. Bypassing transit hubs keeps packet loss under 0.5% on every Sao Tome and Principe route.
Zone 2 routes like Sao Tome and Principe carry high carrier markups — TKOS negotiates direct São Tomé interconnects to keep your rate down. Transparent per-minute rates for Sao Tome and Principe (+239), no hidden fees.
Your account manager covers Africa/Sao_Tome hours for Sao Tome and Principe. Phone, email, and live chat — always online for São Tomé routes, day or night.
Provider report
TKOS
Overall
A+
Score
9.6/ 10
Coverage
A+Direct routes to Sao Tome and Principe
Reliability
A+99.99% uptime SLA
Support
A24/7 live agents
Pricing
ATransparent per-minute
Audit scope
Sao Tome and Principe +239
When selecting an international calling service for Sao Tome and Principe, four factors separate the durable providers from the noise. Look for a proven track record on each.
Zone 2 routes are fragmented — confirm direct in-country termination to São Tomé, not regional hub routing.
African routes degrade on cable outages — require redundant paths and a published failover RTO for Sao Tome and Principe.
Confirm coverage for Africa/Sao_Tome hours — a São Tomé route issue at 09:00 needs a human response, not a next-day ticket.
Zone 2 landline and mobile rates can differ 5× — demand separate +239 landline and mobile rate sheets.
Everything a business or traveller needs to know before dialling Sao Tome and Principe (+239). Can't find an answer? Our team is one click away.
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