Namibia's telephone numbering plan was originally devised when the country, then known as South West Africa, was under South African administration, and integrated into the South African telephone numbering plan
Area codes beginning with 06 being allocated to Namibia, including Walvis Bay, a South Africa enclave, which was not transferred to Namibian sovereignty until 1994.
Following Namibia's independence in 1990, direct dialling between Namibia and South Africa was discontinued, and calls were classed as international. Consequently, subscribers were required to use the international access code and country calling code, omitting the trunk code 0. Namibia had already been allocated its own country code by the International Telecomunication Union, +264.
Windhoek, Namibia to Johannesburg, South Africa Before 1992: 011 xxx xxxx After 1992: 092711 xxx xxxx
Windhoek, Namibia to Johannesburg, South Africa Before 1992: 061 xxx xxx After 1992: 0926461 xxx xxx