Closure of the I.CA Registration Authority

OKsystem news

March 16, 2020

I.CA registration authority in the building of OKsystem a.s. is from 16. 3. 2020 closed until further notice. This measure is implemented based on a decision of the Government of the Czech Republic and the recommendation of the First Certification Authority, a.s.


Measures issued by the First Certification Authority, a.s.:

  • The issuance of subsequent certificates, time stamps and the operation of all online services is provided without interruption
  • The technical support department works without restrictions (use the contacts at
  • The issuance of initial certificates at the registered office of I. CA Podvinný mlýn 2178/6, Prague 9, is temporarily suspended, the Registration Authority is closed
  • CA recommends other operators of Registration Authorities to close their branch if it is not equipped with a partition with separating glass
  • Applicants for certificates are recommended to use the contact details of a specific Registration Authority (see and to verify in advance that the Registration Authority is in operation.


We apologize for the inconvenience and thank you for your understanding.

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