Telephone numbers in Saint Helena and Tristan da Cunha

Country Code: +290
International Call Prefix: 00
Trunk Prefix: 0

Ascension Island no longer shares the same country code with the rest of Saint Helena (i.e. Saint Helena and Tristan da Cunha).

Format: +290 XXXX

2013 change to numbering plan

From 1 October 2013 all existing 4-digit telephone numbers on St Helena will be prefixed by a ‘2’ to implement a 5-digit numbering plan.[1] The change in numbering resulted after the increased demand for new telephone services while also providing a platform for the future introduction of a cellular network on the island.[2]


Number range[3]AreaComments
1XX – 19XXnon-geographicPSTN Service Numbers
9XXnon-geographicEmergency Services
1XXXXReservedReserved for future Telephone Services
20XXXPSTN Services
21XXXPSTN Services
22XXXJamestown, St HelenaPSTN Services
23XXX - 25XXXPSTN Services
260XX – 261XXInformation Service
262XXnon-geographicVoice Messaging
263XXnon-geographicFlexible Access
264XX - 29XXXPSTN Services
3XXXXReserved for future Telephone Services
4XXXXReserved for future Telephone Services
7XXXXReserved for future Telephone Services
8XXXXTristan Da CunhaReserved for future Telephone Services
9XXXXReserved for future Telephone Services

Tristan da Cunha

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]

See also


  1. Sure South Atlantic Ltd. (29 August 2013). "Change to 5 Digit Telephone Numbering Plan" (PDF). The Sentinel. p. 19. Retrieved August 29, 2013.
  2. South Atlantic Media Services (20 June 2013). "Don't forget your number 2's" (PDF). The Sentinel. p. 9. Retrieved August 29, 2013.
  4. "Frequently Asked Questions". Sure South Atlantic Ltd. Retrieved 28 August 2015.
  5. Global Crossing extends FCO network to Tristan da Cunha
  6. Tristan Da CunhaContact Information