+255 is the country code for Tanzania.
Every phone number in Tanzania starts with +255 when you call it from another country. From the US, dial 011 255, then the number without its first 0.
- Time there
- Dar es Salaam timeEast Africa Time, UTC+3, no daylight saving
- From the US or Canada
- 011 255 621 234 567
- From the UK and most of Europe
- 00 255 621 234 567
- From Australia
- 0011 255 621 234 567
- From any mobile phone
- +255 621 234 567
- Inside Tanzania
- 0621 234 567
- Mobile numbers
- 9 digits after +255
- Landlines
- 9 digits after +255, such as +255 22 XXX XXXX in Dar-Es-Salaam
- Toll-free numbers
- Start with 0800 or 0808
Check a +255 number to see whether it is a mobile, a landline or VoIP.
Pick the country, enter the number without the +255, and the free check shows whether it is valid and whether it is a mobile, a landline or VoIP.
Mobile numbers in Tanzania start with 61, 62, 63, 65, 66, 67, 68, 69, 70, 71, 73, 74, 75, 76, 77, 78 or 79, and this table shows which networks first issued each start.
| At home | From abroad | First issued by |
|---|---|---|
| 061 | +255 61 | Viettel |
| 062 | +255 62 | Viettel |
| 063 | +255 63 | Viettel |
| 065 | +255 65 | Yas |
| 066 | +255 66 | Airtel |
| 067 | +255 67 | Yas |
| 068 | +255 68 | Airtel |
| 069 | +255 69 | Airtel |
| 070 | +255 70 | Yas |
| 071 | +255 71 | Yas |
| 073 | +255 73 | Tanzania Telecom |
| 074 | +255 74 | Vodacom |
| 075 | +255 75 | Vodacom |
| 076 | +255 76 | Vodacom |
| 077 | +255 77 | Yas |
| 078 | +255 78 | Airtel |
| 079 | +255 79 | Vodacom |
Viettel started 061, 062 and 063, Yas started 065, 067, 070, 071 and 077, Airtel started 066, 068, 069 and 078, Tanzania Telecom started 073 and Vodacom started 074, 075, 076 and 079. People keep their number when they switch networks, so the start shows where a number began. Our free number portability lookup shows the network it is on today.
7 landline areas cover Tanzania, from 022 in Dar-Es-Salaam to 028 in Mwanza/Shinyanga/Mara/Geita/Simiyu/Kagera/Kigoma.
| At home | From abroad | Area |
|---|---|---|
| 022 | +255 22 | Dar-Es-Salaam |
| 023 | +255 23 | Coast/Morogoro/Lindi/Mtwara |
| 024 | +255 24 | Zanzibar |
| 025 | +255 25 | Mbeya/Songwe/Ruvuma/Katavi/Rukwa |
| 026 | +255 26 | Dodoma/Iringa/Njombe/Singida/Tabora |
| 027 | +255 27 | Arusha/Manyara/Kilimanjaro/Tanga |
| 028 | +255 28 | Mwanza/Shinyanga/Mara/Geita/Simiyu/Kagera/Kigoma |
In Tanzania, the phone number format for apps and SMS gateways is +255 followed by the number without its 0.
| Written | Example | Where you see it |
|---|---|---|
| At home | 0621 234 567 | Business cards, local ads |
| International | +255 621 234 567 | Websites, email signatures |
| E.164 | +255621234567 | APIs, SMS gateways, CRMs |
A missed call from a +255 number you don't know can be a one-ring scam, so check it before calling back.
One-ring scams call once and hang up, hoping you call back a line that bills you international or premium rates.
- Don't call back an international number you don't know. A real caller leaves a message or sends a text.
- Check the number in the box above. A number that is not a working mobile or landline in Tanzania is a warning sign.
- Hang up on anyone who wants gift cards, crypto or a wire transfer, or asks you to read out a code that was just texted to you.
- Report it at reportfraud.ftc.gov, and see the FCC's guide to one-ring scams.
The codes next to +255 belong to other countries, so one wrong digit reaches a different place.
These are the questions people ask most about +255.
Which country uses the +255 country code?
Tanzania. Every phone number there starts with +255 when it is dialed from abroad.
How do I call Tanzania from the US?
Dial 011, then 255, then the number without its first 0. A mobile number written 0621 234 567 at home is dialed 011 255 621 234 567 from the US, or +255 621 234 567 from any mobile phone.
Is +255 the same as 00255?
Yes. 00 is the exit code used in most of the world, and the + on a mobile phone stands in for whatever exit code your network uses. From the US and Canada the exit code is 011 instead.
How many digits is a phone number in Tanzania?
A mobile number has 9 digits after +255, written 0621 234 567 at home. A landline has 9 digits, written 022 XXX XXXX at home.
What are the area codes in Tanzania?
022 for Dar-Es-Salaam, 023 for Coast/Morogoro/Lindi/Mtwara, 024 for Zanzibar, 025 for Mbeya/Songwe/Ruvuma/Katavi/Rukwa, 026 for Dodoma/Iringa/Njombe/Singida/Tabora, 027 for Arusha/Manyara/Kilimanjaro/Tanga and 028 for Mwanza/Shinyanga/Mara/Geita/Simiyu/Kagera/Kigoma. From abroad, drop the 0 and put +255 in front.
What time is it in Tanzania?
Tanzania is on East Africa Time, UTC+3, all year. It does not use daylight saving time.
How do I check a +255 number that called me?
Enter it in the box above. The free check shows whether it is a valid number from Tanzania and whether it is a mobile, a landline or a VoIP line, which helps you spot a one-ring scam before you call back.
Sources: Google's libphonenumber numbering data for lengths, mobile starts, area code places, first-issuing networks and time zones, as of September 24, 2026; the ITU list of country codes.