Roskomnadzor &quot;works&quot; by publishing a list of IP addresses and domain names for ISPs to download. A copy of it is leaked to <a href="http:&#x2F;&#x2F;reestr.rublacklist.net&#x2F;" rel="nofollow">http:&#x2F;&#x2F;reestr.rublacklist.net&#x2F;</a> in real time. Each ISP implements blocking in its own way: DNS blocking, transparent Squid proxy, firewalls or nothing at all sometimes. Nobody really cares if something is actually blocked. BGP hijacking for the purpose of blocking websites is really unlikely at this point.