Ostrava officesMailroom+420 595 590 888podatelna@eru.gov.czProvozní 5491/1722 00 Ostrava – Třeboviceeeuaau7 (data mailbox)Mailroom opening hoursMonday07:45 a.m. – 05:00 p.m.Tuesday07:45 a.m. – 03:30 p.m.Wednesday07:45 a.m. – 05:00 p.m.Thursday07:45 a.m. – 03:30 p.m.Friday07:45 a.m. – 01:30 p.m.