.za history of usage: "ZAR" serves as the ISO 4217 currency code for the South African rand. The international vehicle code for South Africa has been "ZA" since 1936. Additionally, South African aircraft registration prefixes also start with "Z". .ZA has a Second Level Domain (SLD) Structure. ZADNA removed a number of domains from the .za zone on the 7 August 2009 Currently around 29.39% of the .za internet is served via secured HTTPS protocol, with the Let's Encrypt Authority X3 being the most popular SSL certificate. Apache is the most popular web server, serving 66.56% of the .za domains, followed
Aircraft registration Aircraft registration Every civil aircraft must be marked prominently on its exterior by an alphanumeric string, indicating its country of registration and its unique serial number. This code must also appear in its Certificate of Registration, issued by the relevant National Aviation Authority (NAA). An aircraft can only have one registration, in one jurisdiction. In accordance with the Convention on International Civil Aviation (also known as the Chicago Convention), all civil aircraft must be registered with a national aviation authority (NAA) using procedures set by each country. Every country, even those not party to the Chicago Convention, has an NAA