Quick answer: +255 is Tanzania, including Zanzibar. Every Tanzanian number has 9 digits after +255. Mobiles start with 6 or 7. If the number you were given starts with 0, drop the 0. Example: +255 754 123 456.

How to dial Tanzania

Calling from Dial
Any mobile phone +255 + 9 digits
US or Canada landline 011 255 + 9 digits
UK, UAE or India landline 00 255 + 9 digits

Tanzanians write numbers with a leading 0, like 0754 123 456 or 022 212 3456. That 0 is only for calls inside Tanzania. From abroad, leave it out: 0754 123 456 becomes +255 754 123 456.

Mobile and landline numbers

Mobiles are 9 digits starting with 6 or 7, usually written as three groups of three: 754 123 456. They have no area code.

Landlines are a 2-digit area code plus a 7-digit local number. Each code covers several regions, so +255 27 can be Arusha, Moshi or Tanga.

City Area code in Tanzania From abroad
Dar es Salaam 022 +255 22 xxx xxxx
Morogoro 023 +255 23 xxx xxxx
Zanzibar 024 +255 24 xxx xxxx
Mbeya 025 +255 25 xxx xxxx
Dodoma 026 +255 26 xxx xxxx
Iringa 026 +255 26 xxx xxxx
Arusha 027 +255 27 xxx xxxx
Moshi 027 +255 27 xxx xxxx
Tanga 027 +255 27 xxx xxxx
Mwanza 028 +255 28 xxx xxxx

Codes that get mixed up with +255

+254 is Kenya and +256 is Uganda, both neighbours of Tanzania.

Time difference

Tanzania is on East Africa Time (UTC+3) all year, with no daylight saving time. The gap changes when your own clocks change.

Where you are Your clocks on summer time Your clocks on standard time
US East Coast Tanzania is 7h ahead Tanzania is 8h ahead
US West Coast Tanzania is 10h ahead Tanzania is 11h ahead
UK Tanzania is 2h ahead Tanzania is 3h ahead
UAE Tanzania is 1h behind all year
India Tanzania is 2h 30m behind all year

A 9 AM call from New York reaches Dar es Salaam at 4 PM in the US summer and 5 PM in the US winter.

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FAQ

Can I call a Tanzanian 0800 toll-free number from abroad?

Usually not. Tanzanian numbers starting with 0800 are national toll-free lines meant for callers inside Tanzania, so from another country the call often won't connect. Ask the company for a regular number instead.

Why won't my call to +255 go through?

Check three things: you left out the leading 0, you have exactly 9 digits after +255, and you dialed 255, not 254 or 256.