Superonline (became a "brand" name after meger with Tellcom), biggest alternative telecommunications operator in Turkey, is a leased line, broadband and voice services provider. The company is the only operator that offers residential customers up to 100 Mbps internet access and enterprise customers 10 Gbps internet access, metro Ethernet and leased lineby its own nation-wide alternative fiber roll-out. The company also provides xDSL, datacenter co-location, hosting, security, virtual private networks, P2P fiber access, back-up services. The company has its own international fiber access to Bulgaria and many peerings with the global operators. All infrastructure is managed and maintained with the Turkcell's (parent company - 2nd biggest mobile operator in Europe) standards. (Tellcom was founded in 2004 as Bilisim Telekom and changed its name to Tellcom in 2005. In 2008, Tellcom bought the infrastructure and services of Sabanci Telekom.) After completion of the merge phase with Superonline in 2009, company changed its brand as Superonline but remaining legal company name as it is. The company continues investments on fiber roll-out, FTTx, bitstream acces, local loop unbundling, MPLS network and NGN. The company operates as a subsdiary of Turkcell Group