Home | Services & Tools | ac.at Domains
last change: December 09, 2020


The ac.at domain is administrated as a service of the University of Vienna by the austrian NREN ACOnet. Therefore domains under .ac.at must be requested from this institution. An ACOnet participation is not required for the domain application.

If needed, the University of Vienna also provides a Secondary Domain Name Service for domains under .ac.at at ns5.univie.ac.at.

Information about the conditions of allocation and the current fee for ac.at domains is available in German:

Allocation of domains

  • ac.at: Please use our webform for domain applications, updates and cancellations.

  • sth.ac.at: Domains under .sth.ac.at are exclusively assigned to dormitories with an ACOnet-participating responsible organization. For application or updates of a sth.ac.at domain please contact noc@aco.net.

  • gv.at: Allocation of .gv domains is only available at the Federal Ministry for Digital and Economic Affairs. More information about e-government topics is online at Digital Austria. For applications of gv.at domains please contact post.ikt@bmdw.gv.at.

  • at: For domains under .at, .co.at and .or.at we refer to the Austrian registry nic.at.


In case of further questions concerning domains please contact:

T: +43 1 4277 14277