The Serbian National Internet Domain Registry (RNIDS) manages Serbia’s national internet domains, including .rs and .срб, and supports their reliable, secure use. It provides tools for checking whether a domain name is available and explains how to register it through an accredited registrar. RNIDS does not directly handle domain registration renewals or changes to registrant details; these services are carried out by the registrar managing the domain. Its website helps users identify that registrar through a WHOIS search and offers guidance on registration, renewals, domain information, and obtaining domain certificates.

RNIDS also provides information and resources on cybersecurity, DNSSEC, domain protection, and dispute resolution related to national domain names. The organization publishes news, documents, and educational materials, and participates in projects, events, and international internet-governance organizations. Its work includes supporting awareness of online safety and responsible domain use. Based in Belgrade, RNIDS serves domain holders, prospective registrants, accredited registrars, and other members of Serbia’s internet community, offering practical information about the country’s domain system and its services.