Please note: Tristan da Cunha shares country code ‘+290’ with St. Helena. Tristan da Cunha phone numbers begin with ‘8’, while the remaining phone numbers are assigned to St. Helena.
Calling to Tristan da Cunha
- A leading '+' in the phone number means 'dial your country's exit code'.
- Calling from a mobile phone: dial from on the country where you're currently located.
- Calling from a VoIP or satellite phone: dial from on the country where the phone is registered.
… to a mobile (cellular) phone or text (sms)
Use the same call sequence.
When calling a mobile phone user, call to the country where the mobile phone is registered, regardless of where the person being called is currently roaming.
… to a VoIP phone
Use the same call sequence.
When calling a VoIP phone user, call to the country where the VoIP phone is registered, regardless of where the person being called is currently roaming.
… to a satellite phone
Tristan da Cunha does not have a country-specific satellite phone system.
Most satellite phones operate on their country code – calls to these satellite phones follow their own call sequence.
… sending a fax
Use the same call sequence.
Calling within Tristan da Cunha (domestic dialing)
Tristonian phone numbers are simply dialed as they are listed.
There is no trunk or long distance number needed to dial when calling within Tristan da Cunha.
Tristan da Cunha’s phone numbers explained
Number details
Tristan da Cunha’s phone numbers are five digits.
The first digit identifies Tristan da Cunha within country code +590 (shared with St. Helena). Tristan da Cunha phone numbers start with ‘8’.
Calling from Tristan da Cunha
’00’ is used as an exit code to dial an international call from Tristan da Cunha.
Sources and more resources
- ITU (International Telecommunications Union) – United Nations specialized agency for information and communications technologies
- International Telecommunications Union – DIALLING PROCEDURES (INTERNATIONAL PREFIX, NATIONAL (TRUNK) PREFIX AND NATIONAL (SIGNIFICANT) NUMBER) (IN ACCORDANCE WITH ITU-T RECOMMENDATION E.164 (11/2010)) – A collection of dialing procedures for all countries and regions of the world. Retrieved 16 September 2016.
- International Telecommunications Union – Tristan da Cunha (country code +290) National Numbering Plan – details of Tristan da Cunha’s telephone numbering plan as submitted to the ITU. Retrieved 3 December 2016.
- Wikipedia – Telephone numbers in Tristan da Cunha – Wikipedia entry for telephone number data for Tristan da Cunha. Includes specific number ranges for each city as well as detail on calling procedures.
- BT – The Phonebook – Tristan da Cunha – entry for Tristan da Cunha in the British Telecom international directory.