Универсальный сервис проверки ограничения доступа к сайтам и (или) страницам сайтов сети «Интернет» basically 15.3 is against… You have to read it by your self… It is so stupid… Nextcloud is officially BLOCKED in RUSSIA!
Domain nextcloud.com is not blocker, but seems colocated to other blocked resources… Or they block IPs, instead of domains to make it harder to check.
