Hrvatski Telekom, alongside a German company and an Austrian one, is among the interested buyers, IN2 said in an email to SeeNews.
Abroad, Zagreb-based IN2 has offices in Bosnia and Herzegovina, Slovenia, Serbia and Macedonia.
Mandic told SeeNews in an interview in July that all units abroad were operating profitably and that IN2's revenues were expected to post a marginal increase to 20 million euro ($26 million) in 2012.
($=0.7655 euro)