はてなブログ

はてなブログ Censorship in China and North Korea: Technical Blocks and Workarounds

What はてなブログ is

はてなブログ (Hatena Blog) launched in 2011 as a free blogging platform operated by Hatena Co., Ltd., a Japanese web services company based in Kyoto. The platform serves primarily Japanese-language bloggers and has accumulated millions of users across Japan and diaspora communities. Hatena Blog offers customizable templates, community features, and integration with Hatena Bookmark, a social bookmarking service. The platform positions itself as an accessible alternative to self-hosted WordPress instances, with minimal technical barriers to entry.

Why it's censored

China blocks はてなブログ under the regulatory framework established by the Cyberspace Administration of China (CAC) and enforced through the "Great Firewall." The platform is treated as a foreign content distribution vector that lacks Chinese governmental oversight. While no explicit 2024 CAC decree targets はてなブログ by name, the platform falls under broader restrictions on unmonitored foreign blogging infrastructure. Chinese internet regulations, particularly the 2017 Cybersecurity Law and subsequent CAC directives, require all content platforms operating within Chinese jurisdictions to implement content moderation compliant with CCP editorial standards. Since Hatena does not comply with these requirements, the platform faces systematic blocking.

North Korea's blocking of はてなブログ reflects the country's near-total internet isolation policy. Access to international websites, including Japanese platforms, is restricted to a small government elite. North Korea's domestic intranet, Kwangmyong, serves as the primary information network for citizens. Foreign blogging platforms represent uncontrolled information sources incompatible with the regime's information monopoly. Blocks are maintained through hardware-level filtering at the country's single international gateway, operated by the Korean Post and Telecommunications Corporation.

Technical blocking methods

In China, はてなブログ blocking employs multiple techniques. DNS filtering is primary: queries for hatena.com and hatena.ne.jp are intercepted by the Great Firewall's DNS hijacking infrastructure, returning null or spoofed responses. IP-level blocking supplements this; Hatena's server IP ranges are blacklisted at border gateways. Deep Packet Inspection (DPI) monitors outbound HTTPS connections and identifies SNI handshake patterns associated with Hatena domains, allowing real-time connection termination even when DNS evasion is attempted.

North Korea implements simpler but absolute blocking: only whitelisted IP ranges are routable from the country's international gateway. Hatena's servers are simply not on that whitelist. No dynamic evasion is effective because the filtering occurs at the physical network choke point.

User workarounds

China-based users employ VPN protocols and proxy services that obscure destination traffic classification. Standard approaches include tunneling through encrypted protocols that resist DPI analysis, using obfuscated connection methods that disguise traffic as legitimate applications, and rotating through less-monitored gateway servers. DNS-over-HTTPS (DoH) clients bypass DNS hijacking but require the underlying transport layer to remain unblocked.

North Korea's isolation is substantially more difficult to circumvent. Users with access to external networks (researchers, diplomats, select officials) may use standard circumvention infrastructure, but technical barriers are compounded by surveillance and legal consequences.

Alternatives

Medium is similarly blocked in China but more heavily censored in North Korea. WordPress.com is blocked in China but remains accessible in some North Korean scenarios involving diplomatic networks. Substack operates under partial restrictions in China but remains blocked in North Korea alongside most foreign platforms.

Outlook

China's blocking of はてなブログ shows no signs of easing. CAC enforcement has intensified since 2022. North Korea's restrictions are effectively permanent barring regime collapse. Japanese platforms should expect sustained pressure to either localize operations under Chinese oversight or accept exclusion from the Chinese market.