Tanzania
Name

Tanzania

ISO Code

TZ

Region

Middle East & Africa

Mobile Country Code

640

Dialing code

+255

Major carriers

Tigo, Vodacom, Airtel, Excellentcom, Zantel, TTCL Mobile

Guidelines for Tanzania
Two-way SMS supported

Not Supported

Number portability available

Supported

Twilio concatenated message support

Supported

Message length

Supported

Twilio MMS support

Converted to SMS with embedded URL

Sending SMS to landline numbers

SMS cannot be sent to landline destination number. The Twilio REST API will throw a 400 response with error code 21614, the message will not appear in the logs and the account will not be charged.

Best practices

Due to widespread suspicious messaging activities, Tanzanian carriers are now blocking and filtering messages submitted with unregistered sender ID. Message delivery without registered sender ID is on best-effort support.

Twilio strongly encourages customers to review proposed use cases with qualified legal counsel to make sure that they comply with all applicable laws. The following are some general best practices:

  1. Get opt-in consent from each end user before sending any communication to them, particular for marketing or other non-essential communications.
  2. Only communicate during an end user's daytime hours unless it is urgent.
  3. SMS campaigns should support HELP/STOP messages, and similar messages, in the end user's local language.
  4. Do not contact end users on do-not-call or do-not-disturb registries.
Phone Numbers and Sender ID
Preregistered
Operator network capability

Supported

Twilio supported

Supported

Sender ID format

Alphanumeric

Sender ID preserved

Supported

Two-way support

Not supported

Provisioning time

4-5 weeks

Cost
--
Throughput (messages per second)

10 messages/second

Use case restrictions

--

Best practices
--
Alphanumeric
Operator network capability

Not Supported

Twilio supported

--

Sender ID format

Alphanumeric

Sender ID preserved

Not Supported

Two-way support

Not Supported

Provisioning time
--
Cost

--

Throughput (messages per second)
--
Use case restrictions

--

Best practices

--

Long Code
Operator network capability

Not Supported

Twilio supported

Not Supported

Sender ID format

--

Sender ID preserved

Overwritten

Two-way support

--

Provisioning time

--

Cost

--

Throughput (messages per second)

10 messages/second

Use case restrictions

--

Best practices

Supported

Short Code
Operator network capability
--
Twilio supported

Not supported

Sender ID format
--
Sender ID preserved

Not supported

Two-way support

Not supported

Provisioning time

--

Cost

--

Throughput (messages per second)
--
Use case restrictions
--
Best practices

--

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