255 Country Code: Tanzania (+255)
Country code 255 (+255) belongs to Tanzania. Tanzania uses the international dialing code +255, assigned by the International Telecommunication Union (ITU) under the E.164 standard. The ISO 3166-1 alpha-2 code is TZ.
You will see the same code written several ways depending on origin: +255 (universal + prefix, works from mobile), 00255 (from countries that use 00 as their international exit code — most of Europe, Asia, and Latin America), 011 255 (from the US and Canada), 0011 255 (from Australia), or the bare 255. All refer to the same Tanzania country code. Note: 255 is not a US area code — US area codes are also 3 digits but +255 is the international dialing code for Tanzania, not a domestic US destination.
Below you will find the number format, trunk prefix, major city area codes, and dialing facts specific to Tanzania (+255).
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Did You Get a Call from +255? Here's What That Means
Any incoming call that displays +255 followed by more digits is originating from Tanzania. The caller is dialing you from a Tanzania-registered phone number — either a landline or a mobile on a Tanzania carrier.
Common reasons people receive calls from +255:
- -Family or friends in Tanzania calling from a local number
- -Business contacts at Tanzania-based companies
- -Customer support agents working from a Tanzania call center
- -Travel-related calls (hotels, airlines, tour operators)
- -Less commonly, robocalls or scam calls that have spoofed a +255 number — if the call is unsolicited, do not return it without verifying the source
To return a call to a +255 number from the US, use Kinvo's Tanzania dialing guide — calls cost from $1.56/min with no app to download.
Tanzania Phone Number Format
International Format Example
Domestic vs International
Drop 0 and prepend +255.
Calling Tanzania Successfully: Common Mistakes & Best Practices
Most failed calls to Tanzania come from one of four mistakes, not from network problems. The most common is mishandling the leading 0: domestically, Tanzania numbers are written with 0 at the front (e.g. 0712345678), but that 0 is the domestic trunk prefix and must be removed when calling from outside Tanzania. Dial +255 followed directly by the local number without the 0.
The second is misreading the area code on landline numbers — Tanzania numbers may have variable formatting depending on the carrier and city, so confirm the area code with the recipient before dialing. The third is dialing during off-hours — Tanzania uses local business hours and consumer phones are usually answered between 8 AM and 9 PM local time. The fourth and most expensive mistake is assuming your US carrier's WiFi calling feature makes the call cheap. It does not — see WiFi calling vs VoIP for international calls for why.
For scam-call awareness: +255 is the legitimate Tanzania country code, and most unsolicited calls from +255 numbers are legitimate calls from Tanzania-based businesses, hospitals, family members, or call centers serving US customers. Caller-ID spoofing exists, so if a call from a +255 number claims to be from a US government agency, your bank, or the IRS, hang up and call the agency back on its published number. Real authorities never demand payment over the phone.
When you are ready to place a call, the cheapest reliable route is to dial +255 from your browser using Kinvo — no app, no carrier add-on, and the per-minute rate is shown before you connect so there are no bill surprises. The browser approach also works from any laptop, tablet, or phone you happen to have access to, which matters when you're traveling, using a work device, or borrowing someone else's computer.
Calling Tanzania from Your Browser
To place a call to Tanzania, dial +255 followed by the local number in the Kinvo browser dialer. Pay-as-you-go, no app required.
Call Tanzania from Your Browser
Call any Tanzania number (+255) directly from Chrome, Firefox, Safari, or Edge. No install required. Use it in under 2 minutes.
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Frequently Asked Questions: Tanzania Country Code
Which country is country code 255?
Country code 255 belongs to Tanzania. The full international dialing code is +255, also written as 00255 from countries using 00 as their international exit code (Europe, most of Asia, Latin America), 011 255 from the US and Canada, or +255 from any mobile phone.
What is the country code for Tanzania?
+255 is the international dialing code for Tanzania, assigned by the ITU under E.164. The ISO 3166-1 alpha-2 code is TZ. Equivalent forms — 00255, 011 255, +255, and 255 — all refer to the same Tanzania country code.
Is 255 a US area code?
No. 255 is the international country code for Tanzania, not a US area code. US area codes are also 3 digits but they are domestic North American Numbering Plan codes — to reach Tanzania from the US, dial +255 or 011 255 followed by the local number.
Do I drop the 0 when calling Tanzania from abroad?
Yes. Tanzania uses 0 as its domestic trunk prefix. When dialing from another country, remove it and replace with +255. The trunk prefix is only needed for long-distance calls within Tanzania.
Can I call Tanzania from my browser?
Yes. Kinvo connects calls to Tanzania via WebRTC directly from Chrome, Firefox, Safari, or Edge. No app download. Sign up, add credits from $5, and dial +255 followed by the local number.