The Genève-Servette HC competes in a league know by what name prior to the 2017-2018 season?
National League (ice hockey) The National League (NL) is a professional ice hockey league in Switzerland. It is the top tier of the Swiss hockey league system and of the two-tier National League. Prior to the 2017–18 season, the league was officially called National League A.
2016–17 Swiss Challenge League The 2016–17 Brack.ch Challenge League was the 14th season of the Brack.ch Challenge League, the second tier in the Swiss football pyramid. It began on 23 July 2016 and ended on 3 June 2017.