.uk (dot uk) is the network identifier for the United Kingdom, which country uses the identifier .br (dot br)?
.br Committee of Brazil" (CGI.br) was created with an objective to coordinate the allocation of Internet addresses (IPs) and the registration of .br domain names. There were 851 domains registered with the Brazilian DNS ("Domain Name System") by the beginning of 1996, thereafter experiencing rapid growth with the mass arrival of companies, Internet providers and media onto the Internet. The registration system was automated in 1997 and was developed using open source software. In 2005, CGI.br created his own executive arm, the "Núcleo de Informação e Coordenação do Ponto BR"' "The Center for Information and Coordination of Dot BR" (NIC.br), which
Network Access Identifier Network Access Identifier In computer networking, the Network Access Identifier (NAI) is a standard way of identifying users who request access to a network. The standard syntax is "user@realm". Sample NAIs include (from RFC 4282): Network Access Identifiers were originally defined in RFC 2486, which was superseded by RFC 4282, which has been superseded by RFC 7542. The latter RFC is the current standard for the NAI. NAIs are commonly found as user identifiers in the RADIUS and Diameter network access protocols and the EAP authentication protocol. The Network Access Identifier (NAI) is the user identity submitted by the client