 He was the first choice in 2008 and 2009 UEFA European Under-19 Football Championship qualification.Belec received a call-up to Slovenia national under-21 football team in September 2010, he was the backup of Jan Koprivec.On 1 October, he received another call-up against Hungary, which the team was composed with players that eligible to 2013 UEFA European Under-21 Football Championship (born 1990 or after).