.za by Microsoft-IIS serving 11.60% of the total .za domains. The most common 1st character in domain names is "c", with 10.76% of .za domains starting with this character. .za .za is the Internet country code top-level domain (ccTLD) for South Africa. The .za namespace is managed and regulated by the .za Domain Name Authority (ZADNA). Most domains are registered under the second-level domain .co.za. None of the official names for South Africa can be abbreviated to ZA, which is an abbreviation of the Dutch "Zuid-Afrika". Dutch was considered an official language in the Union of South Africa until 1961; it
Aircraft registration Convention on International Civil Aviation (Chicago Convention), signed in 1944, requires that all aircraft engaged in international air navigation bears its appropriate nationality and registration marks. Upon registration, the aircraft receives its unique "registration", which must be displayed prominently on the aircraft. Annex 7 to the Chicago Convention describes the definitions, location, and measurement of nationality and registration marks. The aircraft registration is made up of a prefix selected from the country's callsign prefix allocated by the International Telecommunication Union (ITU) (making the registration a quick way of determining the country of origin) and the registration suffix. Depending on the