.uk (dot uk) is the network identifier for the United Kingdom, which country uses the identifier .es (dot es)?
.es .es .es is the country code top-level domain (ccTLD) for Spain. It is administered by the Network Information Centre of Spain. Registrations are permitted at the second level or at the third level beneath various generic second level categories. Some qualifications and restrictions apply to third-level registrations depending on which second-level domain they are within. Second-level registrations have had some limitations including requiring registrants to have a connection with Spain, but these restrictions were lifted in a multi-stage process completed by the end of 2005, at which point registrations at the second level of .es were open to anybody worldwide.
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 Sample NAIs include (from RFC 4282): Network Access Identifiers were originally defined in RFC 2486, which was superseded by RFC 4282, which has been superseded by RFC 7542.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