.rs is the Internet country code top-level domain (ccTLD) for Serbia, and are also very popular around the world as they can be used for words ending in ‘rs’.
Many websites in Brazil use this domain, because of the abbreviation of Rio Grande do Sul and the fact that the official abbreviation of the state Rio Grande do Sul located in the southern region of Brazil is RS.
Anyone can register a .rs domain name. It can be used for any kind of website.
HOSPEDAGEM DE SITES & REGISTRO DE DOMÍNIOS
List of Largest cities in Rio Grande do Sul: ( All listed domains are Available – February 19, 2018 )