A1 Telekom Austria (A1, A eins) is the leading fixed and mobile network operator in Austria, with 5.4 million mobile and 2.3 million fixed-line customers. A1 Telekom Austria traces its origins to Austria's first GSM mobile phone network which began testing in 1992 and commercial operations in 1994, under the name Mobilkom Austria, then part of the Austrian state-owned PTT agency Post- und Telegraphenverwaltung (PTV, ÖPT) until it was split off into its own company in 1996. After Mobilkom's merger with A1 Telekom Austria Group in July 2010 it operates under the new name of A1 Telekom Austria.
A1 Telekom Austria is a 100% subsidiary of A1 Telekom Austria Group. A1 Telekom Austria offers fixed–mobile convergence. The product portfolio includes Fixed line and mobile telephony, internet, IT services, IPTV, wholesale services as well as mobile payment services. It offers products under the brands A1 (complete services offer), Bob and Yesss! (No frills-mobile telephony flanker brands) as well as Red Bull MOBILE (co-operation with Red Bull).
A1 Telekom Austria Group currently has over 24 million users in 8 countries. It created more than 4 billion EUR and has over 17.500 employees. The group is the European unit of the company América Móvil, the 3rd biggest provider of wireless services in the world.