ExpressVPN

ExpressVPN Censorship: How China Blocks and Users Circumvent It

What ExpressVPN is

ExpressVPN launched in 2009 and is operated by Kape Technologies, a London-listed cybersecurity company. The service maintains servers across 94 countries and reports a user base in the millions. It markets itself as a commercial VPN provider focused on privacy and censorship circumvention, though its parent company's ownership structure and logging practices have been subjects of user scrutiny over the years.

Why it's censored

ExpressVPN is actively blocked in China under the regulatory framework established by the Ministry of Industry and Information Technology (MIIT) and the Cyberspace Administration of China (CAC). China's licensing system for internet access—formalized through the 2017 VPN regulations—explicitly prohibits unauthorized VPN use. Foreign VPN services that lack government approval, including most mainstream commercial options, are classified as unlicensed telecommunications equipment.

The censorship rationale in China centers on two concerns: preventing access to blocked content (news sites, social platforms, political materials) and maintaining state surveillance infrastructure. Users caught with active VPN connections can face fines up to 15,000 yuan; ISPs and telecommunications providers face regulatory penalties for failing to block VPN traffic.

China represents the primary enforcement zone. Other countries implement weaker restrictions: some Gulf states throttle VPN traffic rather than block entirely, while Russia monitors but does not universally block VPN services at the network level.

Technical blocking methods

China employs multiple overlapping techniques to block ExpressVPN specifically:

Deep Packet Inspection (DPI) scans outbound traffic for VPN protocol signatures. OpenVPN and WireGuard protocols are identified by distinctive packet patterns. Chinese ISPs maintain DPI equipment at major network chokepoints and can block matching traffic in real time.

Server IP blocking occurs through blacklisting known ExpressVPN server addresses. This approach is maintenance-intensive but effective: when ExpressVPN rotates IP addresses, users report temporary access windows before new IPs are added to blocklists.

SNI (Server Name Indication) filtering identifies HTTPS connections based on the domain requested during the TLS handshake. China's filtering infrastructure targets known VPN provider domains.

DNS blocking prevents resolution of ExpressVPN's control domains, though this is less effective since users can configure alternative DNS servers.

User workarounds

Users in censored regions typically employ several techniques:

Protocol obfuscation—disguising VPN traffic as regular HTTPS or other permitted protocols—remains partially effective against DPI. Some VPN providers offer obfuscation modules; others use proprietary protocols designed to evade signature detection.

Server IP rotation and the use of lesser-known server addresses—sometimes obtained through private channels or less-documented server lists—provides temporary access before blocklists update.

Bridge servers or proxy-to-VPN connections add an intermediary layer between the user and the VPN endpoint, complicating detection.

Timing-based access: some users report better reliability during periods of lighter network monitoring or immediately after IP rotation.

Alternatives

Other commercial VPN services face similar blocking in China. Mullvad VPN and Proton VPN maintain comparable server networks and are also blocked, though Mullvad's focus on stateless operation and Proton's Swiss jurisdiction don't meaningfully reduce Chinese censorship pressure.

Proton VPN has published technical documentation on Chinese blocking and circumvention, making it somewhat more transparent—but equally restricted at the network level.

Outlook

China's blocking of VPN services has intensified since 2017. The CAC's enforcement has become more consistent, with reported outages of commercial VPN access during sensitive political periods (National Congress sessions, anniversaries of censored events). The blocking infrastructure itself has grown more sophisticated and harder to circumvent.

No easing of restrictions appears probable in the near term. Instead, China continues expanding DPI capacity and coordinating blocking across multiple ISPs, narrowing workaround effectiveness over time.