A1 Bulgaria

A1 Bulgaria, a privately owned telecommunications company headquartered in Bulgaria, was founded in 1994, operates with approximately 1760 employees, and reported $1.0B in revenue as of 2025. It is a tier 1 media tech buyer and a subcompany of A1 Group. The company specializes in telecoms, offering mobile and fixed services, high speed broadband internet, satellite TV, an interactive TV platform, four sport channels under the MAX Sport brand, financial services, ICT, cloud, and IoT solutions. A1 Bulgaria operates a fiber network exceeding 21,000 km and modern infrastructure covering 73 major cities and 133 smaller populated centers, alongside a 5G network across over 210 towns and resorts and 4G networks covering over 99% of the population. Its parent, A1 Group, is a provider of digital services and communications solutions and integrated business solutions across Central and Eastern Europe, serving approximately 26 million customers in seven countries: Austria, Bulgaria, Croatia, Belarus, Slovenia, North Macedonia, and Serbia.