.at
| Introduced | 20 January 1988 |
|---|---|
| TLD type | Country code top-level domain |
| Status | Active |
| Registry | nic.at |
| Sponsor | nic.at |
| Intended use | Entities connected with Austria |
| Actual use | Very popular in Austria, also used for English-language domain hacks |
| Registered domains | 1,468,838 (December 2022) |
| Registration restrictions | None, except for restricted subdomains .gv.at and .ac.at |
| Structure | Registrations are directly at second level, or at third level beneath several second-level labels |
| Documents | .at-Domain Registration Guidelines nic.at - Terms of Use |
| Dispute policies | none since October 2008 |
| DNSSEC | yes |
| Registry website | www |
.at is the Internet country code top-level domain (ccTLD) for Austria. It was introduced on 20 January 1988 and initially administered by the University of Vienna, before being taken over in 1998 by nic.at, based in Salzburg.