.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
The Helsinki Rules on the Uses of the Waters of International Rivers aquifers, but only those connected to a river. Accordingly, the United Nations decided in 1970 to create a more inclusive set of guidelines, which after more than twenty years of investigation by the International Law Commission resulted in the adopting of the Convention on the Law of Non-Navigational Uses of International Watercourses in 1997. The ILA itself addressed this limitation in adopting the Rules on International Groundwaters, also known as the Seoul Rules, in Seoul, Korea in 1986 and the Berlin Rules on Water Resources in 2004, which superseded this guideline. The Helsinki Rules on the Uses of the Waters