Russia's Internet Controls Tighten: April 2026 Roskomnadzor Actions and Technical Blocking Methods

Russia's internet regulatory apparatus continued its expansion of blocking and throttling measures throughout April 2026, according to publicly available regulatory filings, network measurement data, and reports from digital rights organizations monitoring Roskomnadzor's enforcement actions.

Roskomnadzor, the Federal Service for Supervision of Communications, Information Technology and Mass Media, added approximately 1,847 domains and IP addresses to its official block list during April alone, bringing the cumulative total since 2016 to over 287,000 entries. This represents a continuation of the agency's systematic approach to managing what it classifies as extremist content, foreign platforms failing to comply with Russian data localization requirements, and sites hosting prohibited materials. The additions included foreign news outlets, privacy-focused communication platforms, and several decentralized service nodes.

Background on the regulatory framework: Russia's approach to internet control operates through multiple statutory instruments. The law "On Information, Information Technologies and Information Security" (2006) and amendments to the Law "On Mass Media" form the foundation. Roskomnadzor can issue blocking orders without judicial review in cases classified as extremism or child safety threats. Since the 2022 invasion of Ukraine and subsequent geopolitical isolation, blocking scope has expanded significantly. The agency's 2024 "sovereign internet" architectural shift—requiring ISPs to route traffic through state-controlled inspection points—created technical infrastructure for deeper packet inspection at the network level.

On the technical side, Roskomnadzor employs a multi-layered blocking architecture that security researchers have documented through OONI measurements and direct network analysis. The primary mechanism is DNS filtering: Roskomnadzor maintains a block list distributed to major ISP resolvers (Rostelecom, MTS, Beeline, Megafon), causing recursive resolvers to return NXDOMAIN responses for targeted domains. This affects users relying on ISP-provided DNS but fails for those querying external nameservers or using DNSSEC-validating resolvers.

Second-layer blocking uses IP address blacklisting at major internet exchange points (MSK-IX, SPb-IX) and through BGP route filtering at Autonomous System boundaries. This method blocks all traffic to targeted IP ranges, regardless of SNI or hostname. According to reports from Citizen Lab researchers analyzing Roskomnadzor infrastructure, IP-level blocking has intensified, particularly against VPN provider infrastructure and proxy services.

Third-layer inspection involves Deep Packet Inspection (DPI) deployed at ISP chokepoints. Russian ISPs use devices manufactured by Rostelecom, Infosec, and imported Cisco/Juniper systems configured for SNI (Server Name Indication) inspection. When an HTTPS request passes through these systems, the DPI appliance reads the unencrypted SNI field in the TLS ClientHello packet and matches it against a block list. If a match occurs, the connection is terminated via TCP reset. This method fails against encrypted SNI (ESNI/ECH), but ECH adoption remains low in Russia due to browser and server support lags.

In April 2026, reports from GreatFire and independent Russian digital rights group Roskomsvoboda documented expanded DPI deployment in regional ISP networks, particularly in Siberia and Far East regions where previously lighter filtering existed. This represents a geographic expansion of deep inspection capability.

Regional mobile internet shutdowns occurred in Vladivostok (April 3-4) and Khabarovsk (April 19-20), affecting cellular data services across major carriers (MTS, Beeline, Megafon). Roskomnadzor did not formally announce technical justifications; according to Access Now's KeepItOn monitoring project, these appear correlate with unauthorized public assembly events. Technical implementation at the mobile level typically occurs through IMSI filtering or APN-level throttling rather than application-layer blocking.

Throttling of foreign platforms accelerated in April. Telegram, which Roskomnadzor banned in 2018, experienced additional DPI-based congestion, reducing throughput from 1-2 Mbps to 100-200 kbps for connections to known Telegram IP ranges. YouTube experienced similar bandwidth degradation. These are likely implemented via traffic shaping/QoS rules rather than outright blocking, creating a degraded-service model that maintains plausible deniability.

On VPN enforcement: Roskomnadzor issued formal administrative notices to three domestic ISPs in mid-April regarding inadequate VPN blocking. The notices referenced failure to block "VPN services used to circumvent legislative restrictions." This indicates the agency expects ISPs to implement VPN blocking at the protocol level, likely through detection of WireGuard, OpenVPN, and Shadowsocks traffic patterns via DPI signature matching. Such detection remains imperfect—obfuscation protocols (obfs4, V2Ray/Xray, and REALITY obfuscation) can evade signature-based detection by disguising encrypted traffic as benign HTTP/QUIC. However, traffic volume analysis and timing side-channels remain exploitable even against obfuscated protocols.

The Tor Project's bridge network reported increased strain from Russian users in April, consistent with Tor pluggable transports (Snowflake, WebTunnel) providing functional circumvention where conventional tools fail. ECH-based privacy improvements and MASQUE-protocol proxy mechanisms remain largely unavailable to Russian users due to limited server-side deployment globally.

Russia's internet control infrastructure has shifted from crude blocking to sophisticated, multi-vector filtering with geographic variation and protocol-aware inspection. For technically literate users, this creates a cat-and-mouse dynamic where obfuscation and protocol diversity matter. For general populations, functional internet access increasingly requires active circumvention knowledge.