Country Summary

Country nameTanzania
ISO codeTZ
RegionMiddle East & Africa
Mobile country code640
Dialing code+255
Major carriersTigo, Vodacom, Airtel, Excellentcom, Zantel, TTCL Mobile

Guidelines

Two-way SMS supported No
Number portability availableYes
Twilio concatenated message supportYes
Message length160 Characters
Twilio MMS supportConverted to SMS with embedded URL
Sending SMS to landline numbersYou cannot send SMS to a 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.
Compliance considerations

Due to widespread suspicious messaging activities, Tanzanian carriers are now blocking and filtering messages submitted with unregistered Sender IDs. Message delivery without registered Sender IDs is on best-effort basis. To maximize your message delivery rate, pre-register your Sender IDs.  

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 & Sender ID

AlphanumericLong CodeShort Code
Pre-registrationDynamicDomesticInternational
Operator network capabilityRequiredNot SupportedNot SupportedNot SupportedNot Supported
Twilio supported Supported Not Supported --- Supported---
Sender ID preservedYesNoNoNo---
Provisioning time4 weeksN/AN/AN/AN/A
UCS-2 supportSupportedN/AN/ASupportedN/A
Use case restrictions

N/A

N/A

N/A

N/A

N/A

Best practices

N/A

Due to widespread suspicious messaging activities, Tanzanian carriers are now blocking and filtering messages submitted with unregistered Sender IDs. Message delivery without registered Sender IDs is on best-effort basis. To maximize your message delivery rate, pre-register your Sender IDs.  

N/A

Mobile operators in Tanzania do not support Numeric Sender ID. They are overwritten into generic Alphanumeric Sender ID and delivey is at best effort basis. It is highly recommended to send only with pre-registered Sender ID to ensure deliverability.

N/A

Alphanumeric - Pre-registration
Operator network capabilityRequired
Twilio supported Supported
Sender ID preservedYes
Provisioning time4 weeks
UCS-2 supportSupported
Use case restrictions

N/A

Best practices

N/A

Alphanumeric - Dynamic
Operator network capabilityNot Supported
Twilio supported Not Supported
Sender ID preservedNo
Provisioning timeN/A
UCS-2 supportN/A
Use case restrictions

N/A

Best practices

Due to widespread suspicious messaging activities, Tanzanian carriers are now blocking and filtering messages submitted with unregistered Sender IDs. Message delivery without registered Sender IDs is on best-effort basis. To maximize your message delivery rate, pre-register your Sender IDs.  

Long Code - Domestic
Operator network capabilityNot Supported
Twilio supported ---
Sender ID preservedNo
Provisioning timeN/A
UCS-2 supportN/A
Use case restrictions

N/A

Best practices

N/A

Long Code - International
Operator network capabilityNot Supported
Twilio supportedSupported
Sender ID preservedNo
Provisioning timeN/A
UCS-2 supportSupported
Use case restrictions

N/A

Best practices

Mobile operators in Tanzania do not support Numeric Sender ID. They are overwritten into generic Alphanumeric Sender ID and delivey is at best effort basis. It is highly recommended to send only with pre-registered Sender ID to ensure deliverability.

Short Code
Operator network capabilityNot Supported
Twilio supported---
Sender ID preserved---
Provisioning timeN/A
UCS-2 supportN/A
Use case restrictions

N/A

Best practices

N/A

For the benefit of all our customers, these guidelines are provided to help you comply with applicable requirements and to help ensure Twilio's platform remains compliant with global telecommunications ecosystem requirements. These guidelines represent our current understanding of common compliance requirements generally applicable to Twilio and its customers, and do not constitute legal advice. By posting these guidelines, Twilio makes no assurances regarding the legal compliance of your application built using our APIs. You are expected to understand and abide by all compliance obligations applicable to your specific application. You should check these pages regularly for updates as telecommunications ecosystem requirements continue to evolve and change, and the information below may be updated or changed without notice.