Contact ISZO
Invoicing
fakturacie@okte.sk
Hotline
+421 915 853 501
Evaluation of imbalances and differences
+421 917 441 536
+421 907 818 571
financial guarantee
zabezpeky@okte.sk
Requests for renewal of certificates and creation/change of user accounts
certificate@okte.sk
Technical support
support.is@sfera.sk