Bundeszentralamt für Steuern (BZSt), Referat St II 8

Monday: 9:00 a.m. to 3:00 p.m. Tuesday: 9:00 a.m. to 3:00 p.m. Wednesday: 9:00 a.m. to 3:00 p.m. Thursday: 9:00 a.m. to 3:00 p.m. Friday: 9:00 a.m. to 12:00 p.m.

fax: +49 228 4063695

telephone: +49 228 406-0

e-mail: zertifizierungsstelle@bzst.bund.de

• https://www.bzst.de