.rsrs is the Internet country code top-level domain (ccTLD) for Serbia. The domain name registry that operates it is the Serbian National Internet Domain Registry (RNIDS). The letters rs stand for Republika Srbija/Република Србија (Republic of Serbia). It is intended to be used with few restrictions, and it is widely used in Serbia. Because of English words ending with the letters "rs", this domain is also used in the construction of domain hacks, and websites related to the Rust programming language, in which source code files typically end in .
.yu.yu was the Internet country code top-level domain (ccTLD) that was assigned to SFR Yugoslavia in 1989 and was mainly used by Serbia and Montenegro and its two successor states. After Montenegro and Serbia acquired separate .me and .rs domains in 2007, a transition period started, and the .yu domain finally expired in 2010. The .yu ccTLD was assigned originally to the Socialist Federal Republic of Yugoslavia, during the government project for the development of scientific-technological information (SNTIJ).
Country code top-level domainA country code top-level domain (ccTLD) is an Internet top-level domain generally used or reserved for a country, sovereign state, or dependent territory identified with a country code. All ASCII ccTLD identifiers are two letters long, and all two-letter top-level domains are ccTLDs. In 2018, the Internet Assigned Numbers Authority (IANA) began implementing internationalized country code top-level domains, consisting of language-native characters when displayed in an end-user application.
Top-level domainA top-level domain (TLD) is one of the domains at the highest level in the hierarchical Domain Name System of the Internet after the root domain. The top-level domain names are installed in the root zone of the name space. For all domains in lower levels, it is the last part of the domain name, that is, the last non empty label of a fully qualified domain name. For example, in the domain name www.example.com, the top-level domain is .com. YugoslaviaYugoslavia (ˌjuːɡoʊˈslɑːviə; Југославија juɡǒslaːʋija; Jugoslavija juɡɔˈslàːʋija; Југославија juɡɔˈsɫavija; Land of the South Slavs) was a country in Southeast and Central Europe which existed from 1918 to 1992. It came into existence in 1918 following World War I, under the name of the Kingdom of Serbs, Croats and Slovenes from the merger of the Kingdom of Serbia with the provisional State of Slovenes, Croats and Serbs (which was formed from territories of the former Austria-Hungary), and constituted the first union of South Slavic peoples as a sovereign state, following centuries of foreign rule over the region under the Ottoman Empire and Austria-Hungary.
