Telekom Austria AG is Austria's leading telecoms operator. Net sales break down by activity as follows:
- mobile telecommunications services (45.5%): 19,7 million subscribers at the end of 2018, of which 5.1 million in Austria, 4.9 million in Belarus, 3.8 million in Bulgaria, 2.3 million in Serbia, 1.8 million in Croatia (via VIPnet), 1.1 million in Macedonia and 0.7 million in Slovenia;
- fixed telecommunication services (37.9%): fixed-line telephony service (3.6 million lines installed at the end of 2018) and Internet access. The group also develops telecommunication for telecom operators (line leasing, satellite transmission services, creation of domain names, etc.);
- sale of communication equipments (14.5%);
- other (2.1%).
Net sales break down geographically as follows: Austria (57.5%), Bulgaria (10.4%), Croatia (9.3%), Belarus (9.3%), Serbia (6.1%), Slovenia (4.5%), Macedonia (2.7%) and other (0.2%).