Its second home market is Central Europe, served via subsidiaries and investments in the Czech Republic (ČSOB), Slovakia (ČSOB and Istrobanka), Hungary (K&H Bank) and Bulgaria (CIBank and UBB Bank). In all of these countries, KBC Bank is a leading player by market share. It also has a substantial presence in Ireland through its subsidiary KBC Bank Ireland (formerly IIB Bank), which is a major player in both the corporate and residential mortgage markets there.