Czech Telecommunication Office
Dear users,
Due to a planned update of our systems, selected information systems will be temporarily unavailable from 5.00 pm on Friday 6 November 2026 until the afternoon of Sunday 8 November 2026.
This will affect, for example, the Balík, ePortál, ESD and ESD2 applications. Some services may not be available during this period.
Thank you for understanding.









