Tanzania country code, +255 explained.
Everything you need to call Tanzania with Twiching — full dialing format, step-by-step guide, and Tier-1 CLI routes that land every call.
Tanzania
Dodoma · Africa
· COUNTRY INFO · VERIFIED
ISO Alpha-2
TZ
Capital
Dodoma
Region
Africa
Timezone
UTC+3
· DIALING GUIDE · VERIFIED
FULL DIAL FORMAT
011 · +255 · XX · XXXXXXX
How Tanzania numbers break down
A complete number to Tanzania 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 Tanzania.
AREA / MOBILE
Regional or mobile prefix — drop the leading 0.
LOCAL NUMBER
The subscriber's local number.
COMPLETE NUMBER FORMAT
011 · +255 · XX · XXXXXXX
Tanzania on the map
Dodoma · Africa
ROUTE
Tier-1 Direct
CLI
Verified
ASR
60%+ min
Get a business phone number in Tanzania
A Twiching virtual number in Tanzania carries local +255 caller ID over a Tier-1 SIP trunk, so outbound calls land as a recognisable domestic number instead of an unfamiliar international one. Provisioning takes minutes, not a carrier contract.
Local +255 caller ID
Calls display a recognisable Tanzania number instead of an unfamiliar international one.
SIP trunking
Route your existing PBX or softphone through Twiching's Tier-1 trunk — no hardware swap.
Minutes to provision
Numbers activate in the dashboard the same day, with no on-the-ground carrier contract.
+255
Tanzania · ready to provision today
Why businesses route Tanzania calls through Twiching
The same Tier-1 interconnects, STIR/SHAKEN attestation, and delivery-rate guarantees that cover major markets apply to Tanzania calls too, with no reduced service tier.
Tanzania
+255
191
Countries in directory
TANZANIA INCLUDED
99.97%
Call delivery rate
STIR/SHAKEN
500+
Carrier interconnects
TIER-1 DIRECT
60%+
Guaranteed ASR
REAL-TIME ROUTING
How Tanzania phone numbers are structured
Numbering Format
COUNTRY
+255
AREA
XX
LOCAL
XXXXXXX
Dialing into Tanzania means working with an open numbering plan under country code +255: a 2-digit prefix plus a 7-digit subscriber number, 9 digits total. Locally, numbers usually carry a leading "0" that gets dropped when calling Tanzania from outside the country.
Carriers & language
Mobile coverage in Tanzania comes from 3 major networks — Vodacom Tanzania, Airtel Tanzania, Tigo Tanzania — with internet penetration at 50%. VoIP is permitted and regulated by Tanzania Communications Regulatory Authority (TCRA). Language (Swahili, English) and currency (Tanzanian Shilling) both matter here for IVR, SMS, and scheduling support around local business hours.
Africa context
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 +255 country code to reach Tanzania.
Keeping the national trunk "0"
Tanzania numbers often show a domestic leading 0 — drop it once you've dialed the +255 country code from outside the country.
Ignoring the time difference
UTC+3 governs local business hours in Tanzania; confirm the time there before placing the call.
Compliance, carriers & rates for Tanzania
Permitted — TCRA regulated
Regulated by Tanzania Communications Regulatory Authority (TCRA)
Tanzania's regulatory posture under Tanzania Communications Regulatory Authority (TCRA) is permissive toward VoIP, meaning a business can start calling and texting into the country without a separate compliance process.
- TCRA licenses VoIP services under the Electronic and Postal Communications Act (EPOCA) 2010.
- Number portability is implemented; virtual number providers must comply with TCRA numbering plan requirements.
- Lawful interception and emergency services routing compliance are mandatory for all licensed VoIP operators.
Direct Tier-1 interconnect with Vodacom Tanzania — no wholesale transit in between.
US → Tanzania
$0.20/min
Tanzania → US
$0.15/min
Billed per second, not rounded to the minute
How businesses use a Tanzania number
Local TZ caller ID
Present a Tanzania +255 number so prospects in Dodoma and nationwide recognise the call and are more likely to answer.
Direct routing, not transit
Tanzania traffic rides Twiching's direct interconnect with Vodacom Tanzania, skipping the lower-tier wholesale transit that can degrade call quality.
No missed calls after hours
Scheduling support and sales coverage around UTC+3 keeps a Tanzania number answered during the local business day, not the middle of the night elsewhere.
One platform, Tanzania included
Tanzania is provisioned the same way as every other Twiching market — no separate onboarding process for a new country in the directory.
FAQ
Calling Tanzania — frequently asked questions
Over Tier-1 direct interconnects with major local networks like Vodacom Tanzania, rather than lower-quality wholesale transit routes. That direct-carrier approach is what keeps delivery rates and call clarity high.
Yes. VoIP is permitted in Tanzania, regulated by Tanzania Communications Regulatory Authority (TCRA), so businesses can run cloud numbers and SIP termination on compliant routes. There's no special licensing hurdle for a Twiching customer to clear before calling or texting into Tanzania.
Tanzania uses an open plan: a separate 2-digit area or mobile prefix followed by a 7-digit subscriber number. The prefix is what routes the call to the right region or network once it lands in the country.
Where locally supported, yes — Twiching's Tanzania numbers can send and receive SMS in addition to voice calls. That makes a single number usable for both two-way conversations and outbound notifications.
3 major networks serve Tanzania: Vodacom Tanzania, Airtel Tanzania, Tigo Tanzania. Twiching interconnects directly with these carriers over Tier-1 routes rather than relying on third-party transit.
The US exit code is 011 for any international call, including to Tanzania. It comes right before the +255 country code, and Twiching adds both automatically when you dial from the app, so you only need to enter the local number.
Full country code directory
The rest of Africa is one click away — each country page below follows the same format as Tanzania: dial code, numbering plan, carriers, and current rates. All 190 other countries are listed below, Africa first.
Get started
Get a Tanzania number.
See what a real phone stack does.
Phone numbers, voice, SMS and AI on one account. Direct Tier-1 routing into Tanzania from day one.
Compliance with applicable regulations required.