In the island of

Saint Helena Saint Helena () is a British overseas territory located in the South Atlantic Ocean. It is a remote volcanic tropical island west of the coast of south-western Africa, and east of Rio de Janeiro in South America. It is one of three constit ...

and the archipelago of

Tristan da Cunha Tristan da Cunha (), colloquially Tristan, is a remote group of volcano, volcanic islands in the South Atlantic Ocean. It is the Extreme points of Earth, most remote inhabited archipelago in the world, lying approximately from Cape Town, Sou ...

, telecommunications are administered by Sure Saint Helena. There is a fixed five-digit number plan, and the country calling code is +290.

Ascension Island Ascension Island is an isolated volcanic island, 7°56′ south of the Equator in the South Atlantic Ocean. It is about from the coast of Africa and from the coast of South America. It is governed as part of the British Overseas Territory of ...

is also part of the

British Overseas Territory The British Overseas Territories (BOTs), also known as the United Kingdom Overseas Territories (UKOTs), are fourteen territories with a constitutional and historical link with the United Kingdom. They are the last remnants of the former Br ...

Saint Helena, Ascension and Tristan da Cunha Saint Helena, Ascension and Tristan da Cunha is a British Overseas Territory located in the South Atlantic and consisting of the island of Saint Helena, Ascension Island and the archipelago of Tristan da Cunha including Gough Island. Its name wa ...

, but it has a separate calling code and numbering scheme.

2013 change to numbering plan

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. 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.

Allocations

Tristan da Cunha

Although Tristan da Cunha shares the +290 code with St Helena, residents have access to the

Foreign and Commonwealth Office The Foreign, Commonwealth & Development Office (FCDO) is a department of the Government of the United Kingdom. Equivalent to other countries' ministries of foreign affairs, it was created on 2 September 2020 through the merger of the Foreig ...

Telecommunications Network, provided by

Global Crossing Global Crossing was a telecommunications company that provided computer networking services and operated a tier 1 carrier. It maintained a large backbone network and offered peering, virtual private networks, leased lines, audio and video co ...

. This uses a

London London is the capital and List of urban areas in the United Kingdom, largest city of England and the United Kingdom, with a population of just under 9 million. It stands on the River Thames in south-east England at the head of a estuary dow ...

020 numbering range, meaning that numbers are accessed via the

UK telephone numbering plan Telephone numbers in the United Kingdom are administered by the Office of Communications ( Ofcom). For this purpose, Ofcom established a telephone numbering plan, known as the ''National Telephone Numbering Plan'', which is the system for as ...

.Tristan da Cunha Post Office
/ref>

References

Saint Helena-related lists {{Telephonenumber-stub

2013 change to numbering plan

Allocations

Tristan da Cunha

See also

References