nic.at GmbH is the official registry for all domains ending in .at, and for the extensions .co.at and .or.at. It describes itself as the only registry for .at domains. The company maintains the database of these domains, provides public Whois data, and handles holder and registrar support, including a customer login for holders who registered directly with nic.at. Together with its foundation owner it represents Austrian interests in ICANN, CENTR and RIPE. It has operated the .at zone since 1988.
nic.at GmbH is based in Salzburg, Austria, and is a wholly owned subsidiary of Internet Privatstiftung Austria, a foundation that holds the .at domain administration in trust for the general public. According to the company, the registry database and name servers are maintained under contract by the Vienna University Computer Center (ZID), and the data and name servers are technically protected against unauthorised access and failure. For a European organisation this means an Austrian registry under a national foundation owner, with no non-European owner identified.