Eastern region
The provinces of Overijssel and Gelderland are part of the OSN Eastern region. Managing this region is Wilfred Schoonderbeek. Wilfred can be contacted at tel.: +31(0)88 4 555 000 or at
his mobile phone number +31(0)6 50 50 37 31. If you wish, you can also send an e-mail message to w.schoonderbeek@osn.nl.
