Dear Sirs, on May 3, 2017 at 08:00 PM to May 4, 2017 4:00 AM (the timing will be in the zone CEST - Central European Summer Time) the domain management shutdown will be carried out. The system will be unavailable during the shutdown. The earlier start and longer shutdown time is enforced by the scale and type of changes we plan to make. At that time there will not be available information associated with the registry in the Intranet - credit status, list of invoices and expired domains of registrars. 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. I would like to point out the fact that the earlier start of the shutdown will mean the impossibility of last-minute domain renewals. During the shutdown there will be upgraded the PostgreSQL database to the 9.6 version and there will be deployed changes related with this step. The new system version is already implemented on the cz-test instance. In case of any questions do not hesitate to contact me. We apologize for any inconvenience caused. Markéta Kušičková -- Markéta Kušičková CZ.NIC, z.s.p.o. Milešovská 5 130 00 Praha 3 T +420 222 745 125 M +420 603 826 732