| Country: | Saint Helena, Ascension and Tristan da Cunha |
| Country Link: | Saint Helena, Ascension and Tristan da Cunha |
| Continent: | Africa |
| Country Calling Code: | +290 |
| International Prefix: | 00 |
| Trunk Prefix: | n/a |
In the island of Saint Helena and the archipelago of Tristan da Cunha, telecommunications are administered by Sure Saint Helena. There is a fixed five-digit number plan, and the country calling code is +290.
Ascension Island is also part of the British Overseas Territory of Saint Helena, Ascension and Tristan da Cunha, but it has a separate calling code and numbering scheme.
From 1 October 2013, all existing 4-digit telephone numbers on St Helena were to be prefixed by a '2' to move from a 4-digit to a 5-digit numbering plan.[1] The change in numbering resulted from an increased demand for new telephone services and also provided a platform for the future introduction of a cellular network on the island.[2]
| Number range[3] | Area | Comments |
|---|---|---|
| 1XX – 19XX | non-geographic | PSTN Service Numbers |
| 9XX | non-geographic | Emergency Services |
| 1XXXX | Reserved | Reserved for future Telephone Services |
| 20XXX | PSTN Services | |
| 21XXX | PSTN Services | |
| 22XXX | Jamestown, St Helena | PSTN Services |
| 23XXX - 25XXX | PSTN Services | |
| 260XX – 261XX | Information Service | |
| 262XX | non-geographic | Voice Messaging |
| 263XX | non-geographic | Flexible Access |
| 264XX - 29XXX | PSTN Services | |
| 3XXXX | Reserved for future Telephone Services | |
| 4XXXX | Reserved for future Telephone Services | |
| 5XXXX | non-geographic | Mobile[4] |
| 6XXXX | non-geographic | Mobile |
| 7XXXX | Reserved for future Telephone Services | |
| 8XXXX | Tristan Da Cunha | Reserved for future Telephone Services |
| 9XXXX | Reserved for future Telephone Services | |
Although Tristan da Cunha shares the +290 code with St Helena, residents have access to the Foreign and Commonwealth Office Telecommunications Network, provided by Global Crossing.[5] This uses a London 020 numbering range, meaning that numbers are accessed via the UK telephone numbering plan.[6]