IBB customer support
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Address & business hours
Investitionsbank Berlin (IBB)
Bundesallee 210
10719 Berlin
Telephone: +49 (0) 30 / 2125-0
Monday to Thursday 8am – 5pm
Friday 8am – 3pm
Technical support – Customer portal
Telephone: +49 (0) 30 / 2125-2555
Monday to Friday 8am – 4pm