International dialling codes beginning with the number 2 are chiefly for which continent?
National conventions for writing telephone numbers 7 everywhere else. South Africa uses 10 digit dialling which became required since 16 January 2007. The 10 digits used for local calls (AAA XXX XXXX or 0AA XXX XXXX) consists of a 3 digit area/type code (the first digit in the area/type code is a trunk prefix) and 7 digits. All area codes including mobile start with a "0" (trunk prefix) for domestic calls. When dialing from another country the international calling code for South Africa is "+27" with the rest of the digits excluding the trunk prefix (+27 AA XXX XXXX). The International Telecommunication Union sector ITU-T issued
Former Australian dialling codes Former Australian dialling codes The format of telephone numbers in Australia has changed over time to allow for the expansion of the subscriber base as technology has improved. The introduction of subscriber trunk dialling was slow, partly because of the distances of exchanges in some areas and partly due to the use of manual exchanges well into the 1980s. Initially, dialing codes covered a very small area, sometimes only one exchange, but gradually exchanges conglomerated to become large area codes. The length of codes varied; as early as 1971, some localities had area codes as long as seven digits, while