Dear Sirs, on Tuesday April 25, 2023 from 00:01 AM to 04:30 AM (the timing will be in the zone CEST - Central European Summer Time) the domain management system will be shut down - the system will be temporarily unavailable. Deleting domains from April 24, 2023 will take place before the shutdown. The Intranet will be unavailable for most of the stated time. Furthermore,the EPP system, web/unix WHOIS and RDAP; displaying a list of registrars; establishing requests for authinfo, blocking and unblocking; MojeID profile editor; interface for creating MojeID accounts and login into the domain browser will not work as well. Most of our websites, including the nic.cz website, will also be shut down for a short period of time within the mentioned time window. The CZ zone will also not be generated and published during the shutdown. Necessary work on the system infrastructure will take place during the shutdown. After the shutdown, we do not expect any changes in the functionality of the system. We apologize for any inconvenience caused. Thank you for your understanding Kind regards Markéta Kušičková -- Markéta Kušičková CZ.NIC, z.s.p.o. Milešovská 5 130 00 Praha 3 M +420 603 826 732