Country code
Tanzania: +255
Tanzania uses country code +255. From the United States, dial 011 255 621 234 567. A number is written +255 621 234 567.
How to call Tanzania
The table uses the example number below. Replace it with the number you are calling. Drop the 0 at the start of the national number when you dial from abroad.
| Calling from | Exit code | Dial |
|---|---|---|
| Any mobile phone | None | +255 621 234 567 |
| United States | 011 | 011 255 621 234 567 |
| Canada | 011 | 011 255 621 234 567 |
| United Kingdom | 00 | 00 255 621 234 567 |
| Australia | 0011 | 0011 255 621 234 567 |
| Germany | 00 | 00 255 621 234 567 |
| France | 00 | 00 255 621 234 567 |
| India | 00 | 00 255 621 234 567 |
| Japan | 010 | 010 255 621 234 567 |
| Mexico | 00 | 00 255 621 234 567 |
| South Africa | 00 | 00 255 621 234 567 |
How a Tanzania number is built
Digit counts are the national number only, after the country code and without the 0 trunk prefix.
| Line | Digits | Pattern |
|---|---|---|
| Mobile | 9 digits | (?:6[0-35-9]|7\d)\d{7} |
| Landline | 9 digits | 2[2-8]\d{7} |
| Toll free | 9 digits | 80[08]\d{6} |
| Premium rate | 9 digits | 90\d{7} |
- Example, national form
- 0621 234 567
- Example, international form
- +255 621 234 567
Validate a Tanzania number
Paste a number and the tool checks it against the numbering plan. It returns the standard formats and the line type the plan assigns.
Type the number the way it is written in Tanzania, or start with + and the country code.
Area codes and places in Tanzania
The start of a number shows the place its range was first assigned to. 7 ranges are listed in the source.
| Starts with | Place |
|---|---|
| +255 22 | Dar-Es-Salaam |
| +255 23 | Coast/Morogoro/Lindi/Mtwara |
| +255 24 | Zanzibar |
| +255 25 | Mbeya/Songwe/Ruvuma/Katavi/Rukwa |
| +255 26 | Dodoma/Iringa/Njombe/Singida/Tabora |
| +255 27 | Arusha/Manyara/Kilimanjaro/Tanga |
| +255 28 | Mwanza/Shinyanga/Mara/Geita/Simiyu/Kagera/Kigoma |
7 rows. Names are where the range was first assigned; numbers move between places and carriers.
Who first issued each range in Tanzania
19 ranges are listed in the source with the network that first held them. Numbers port between networks, so the current network can differ.
| Starts with | First issued to |
|---|---|
| +255 60 | Airtel |
| +255 61 | Viettel |
| +255 62 | Viettel |
| +255 63 | Viettel |
| +255 65 | Yas |
| +255 66 | Airtel |
| +255 67 | Yas |
| +255 68 | Airtel |
| +255 69 | Airtel |
| +255 70 | Yas |
| +255 71 | Yas |
| +255 72 | Vodacom |
Show the other 7 rows
| Starts with | First issued to |
|---|---|
| +255 73 | Tanzania Telecom |
| +255 74 | Vodacom |
| +255 75 | Vodacom |
| +255 76 | Vodacom |
| +255 77 | Yas |
| +255 78 | Airtel |
| +255 79 | Vodacom |
19 rows. The first issuer of the range; numbers port between carriers, so the current carrier can differ.
Questions about calling Tanzania
- What is the country code for Tanzania?
- The country code for Tanzania is +255. Written in full, a number looks like +255 621 234 567.
- How do I call Tanzania from the United States?
- Dial 011, then 255 621 234 567. On a mobile phone you can dial +255 621 234 567 instead.
- Do I dial the 0 at the start of a Tanzania number from abroad?
- No. The 0 is the trunk prefix used for calls inside Tanzania (0621 234 567). From abroad it is dropped after +255 (+255 621 234 567).
- How many digits is a Tanzania phone number?
- Mobile numbers have 9 digits after the country code. Landline numbers have 9 digits.
Check numbers in bulk with the API
| Product | Credits | Docs |
|---|---|---|
| Phone Numbering-Plan Validation | 1 credit per valid number | API docs |
| Country Calling Codes | 1 credit per lookup (an unknown code, country or name is free) | API docs |
Number patterns, lengths and examples: libphonenumber-js 1.13.15, released 2026-10-08, read 2026-10-19, built on Google's libphonenumber metadata. Place names and first issuers: libphonenumber geocoding and carrier files, read 2026-10-19. Library. LookValid is not connected to Google or to any phone company named here.