ERO’s registered officeMailroom and telephone exchangeERO Operation Department+420 564 578 666podatelna@eru.cz564 578 640Masarykovo náměstí 91/5, 586 01 Jihlavaeeuaau7 (data mailbox) Ostrava officesMailroomERO Operation Department+420 595 590 888podatelna@eru.czProvozní 5491/1, 722 00 Ostrava – Třeboviceeeuaau7 (data mailbox) Prague officesMailroomERO Operation Department+420 255 715 555podatelna@eru.czJankovcova 1566/2b, 170 00 Praha 7 – Holešoviceeeuaau7 (data mailbox)