Russian authorities appear to have expanded their internet filtering efforts by targeting encrypted DNS services, potentially making it harder for users to conceal their browsing activity from internet service providers.
Reports from multiple Russian sources indicate that access to DNS-over-HTTPS (DoH) and DNS-over-TLS (DoT) services is being restricted, with infrastructure associated with Google and Cloudflare reportedly among the targets. Russia’s communications regulator, Roskomnadzor, has not publicly confirmed the reported restrictions.
The Russian Telegram channel BypassBlock said it received reports from multiple locations indicating that the filtering had been activated. Other Russian media have reported similar disruptions, although the precise geographic scope of the measures remains unclear.
DoH and DoT encrypt DNS requests, preventing them from being transmitted as ordinary unencrypted queries. DNS is responsible for translating domain names into the IP addresses computers use to locate online services. Encrypting these requests can reduce the amount of browsing-related information visible to network operators and internet service providers.
Blocking access to widely used encrypted DNS servers can therefore force affected users to rely on alternative DNS infrastructure or unencrypted DNS connections. The measure does not itself block every website, but it removes one mechanism people can use to make their DNS activity less visible to intermediaries.
The reported action does not appear to be Russia’s first attempt to interfere with encrypted DNS. Risky Bulletin reported that similar filtering may have been tested on Russian telecommunications provider Beeline’s network in March 2026, although the provider denied implementing such restrictions at the time. Russian authorities had also explored measures against DoH several years earlier.
The latest reports come as Russia continues tightening controls over technologies capable of circumventing internet filtering. VPN provider Multihop reported that restrictions observed during August have increasingly targeted infrastructure rather than individual protocols. According to its assessment, the measures have affected encrypted DNS services, hosting networks, and regional connectivity.
Users affected by restrictions on Google or Cloudflare encrypted DNS may still be able to use another DNS provider if its infrastructure remains accessible. DNS traffic can also be routed through certain VPN configurations. Falling back to conventional unencrypted DNS may restore name resolution where encrypted services are unavailable, but DNS requests would no longer receive the privacy protection provided by DoH or DoT.
The reported blocking comes amid a broader effort by Russian authorities to restrict tools used to bypass state internet controls. However, Roskomnadzor has not issued a public statement confirming the latest DoH and DoT restrictions, so the exact technical methods being deployed and their nationwide coverage have not been officially established.
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