Telephone numbers in South Africa are administered by the Independent Communications Authority of South Africa(ICASA). On 16 January 2007, the country switched to a closed numbering plan. It became mandatory to dial the full nine-digit national telephone number. For calls within the country, this is prefixed by trunk code 0 (zero), which is often included in listings of the area code. Area codes within the system are generally organized geographically. Special services by Telkom have numbers with special formats.
Following its independence, Namibia discontinued direct dialing from South Africa and replaced it with international dialing using country code 264. For example, for a call from South Africa to Windhoek, before and after 1992:
Before 1992: 061 xxx xxxx
After 1992: 09 26461 xxx xxxx
After January 2007: 00 26461 xxx xxxx
Lesotho
Calls to Lesotho could be made using the access code 050 instead of the international code 266; for example, to call Maseru from South Africa, subscribers would dial 0501.
088: Fax Divert, Pagers and Telkom CallAnswer voicemail
089: Maxinet, for polls and radio call-in services
Note that from 10 November 2006, mobile number portability was introduced in the cellular market. The cellular prefixes as above are therefore not strictly applicable anymore, although they remain mostly unchanged.
09X XXX XXX (Premium-rate and machine-related numbers)
090: Premium-rate services
0902: Premium-rated adult services
091: Premium-rate services
092: Premium-rate services
096: Machine-related services (14-digit numbers)
097: Machine-related services (14-digit numbers)
098: Machine-related services (14-digit numbers)
There are still some non-automated exchanges which use longer dialing codes, mostly for "farm lines" and remote areas with operator-assisted exchanges.
09X XXX XXXX numbers are no longer in use in South Africa.