Hansen first represented Denmark under-19s against the Netherlands under-19s in the 1997 International Youth Tournament, making six appearances in the tournament.[1] He played for Denmark in the 1998 Under-19 Cricket World Cup, making his Youth One Day International (YODI) debut against Ireland under-19s. He made five further YODI appearances in the tournament, the last of which came against Namibia under-19s.[2] The following year, he again represented Denmark under-19s, this time in the European Under-19 Championship.[1] His senior debut for Denmark came in a minor match against the Netherlands in 2003.[1] He made two further appearances for Denmark in that year, before making three appearances in the 2004 European Championship Division One.[1]
The following year he was selected in Denmark's squad for the 2005 ICC Trophy in Ireland. The International Cricket Council afforded List A status to these matches, with Hansen making his List A debut during the tournament against Uganda. He made four further List A appearances in the tournament, the last of which came against the Netherlands.[3][4] He scored 34 runs in his five matches, at an average of 8.50 and with a high score of 17.[5] These were his only List A appearances for Denmark. His final appearance for Denmark came in 2006, in a friendly match against the Gloucestershire Second XI.[1]