 A1 Telekom Austria

A1 Telekom Austria (A1) 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) until it was split off into its own company in 1996.