Kakaku.com

Kakaku.com Blocked in China and North Korea: Technical Analysis

What Kakaku.com Is

Kakaku.com launched in 1997 as Japan's largest price comparison and shopping research platform. Operated by Kakaku.com Inc., a subsidiary of the Softbank Group, the service aggregates product prices, reviews, and specifications across Japanese retailers. The platform serves millions of monthly users primarily across Japan and Japanese-speaking markets, functioning as middleware between consumers and e-commerce merchants. Its database covers electronics, appliances, mobile phones, software, and household goods.

Why It's Censored

China restricts access to Kakaku.com through its Great Firewall, though official blockade rationales remain undocumented by Chinese authorities. The most probable cause is that the platform operates without content licensing or server presence in mainland China, making it subject to blanket restrictions on foreign e-commerce aggregators. China's Cyberspace Administration enforces Article 4 of the Network Security Law (2016), which grants the state authority to block services deemed security risks or non-compliant with domestic regulations. Foreign price comparison sites that bypass Chinese retailers' pricing controls or circumvent domestic e-commerce monopolies face particular pressure.

North Korea's censorship of Kakaku.com is far more comprehensive. The country permits almost no direct international e-commerce access; Kakaku.com is blocked as part of North Korea's near-total internet isolation. Citizens have extremely limited online access outside state-controlled networks. The regime blocks virtually all foreign shopping platforms as part of economic sanctions enforcement and to prevent exposure to external consumer markets, which could undermine state-run supply systems.

Technical Blocking Methods

China employs multiple layered techniques. DNS filtering is the first barrier—queries for kakaku.com typically resolve to null or blank responses when originating from Chinese networks. For users who bypass DNS hijacking via alternative resolvers, IP-level blocking follows: the platform's content delivery servers face connection timeouts from mainland Chinese IP ranges. Deep packet inspection (DPI) systems also analyze HTTPS traffic for domain indicators within the Server Name Indication (SNI) extension, permitting China to block sites even when DNS is circumvented.

North Korea's blocking is cruder but more absolute. The country operates a walled intranet with limited international connectivity. Kakaku.com is inaccessible because international traffic routes are physically filtered at the gateway level, enforced by the state telecom monopoly. No DNS spoofing or IP blocking is necessary when external connectivity is essentially prohibited.

User Workarounds

Users in China attempting access typically employ virtual private networks, which tunnel traffic through servers outside the Great Firewall, thereby bypassing DNS, IP, and DPI blocks simultaneously. Proxy services, Tor browser (though also throttled), and SSH tunnels serve similar purposes. Users should note that VPN usage in China exists in legal gray zones; commercial providers operate without official permission.

North Korean users have virtually no practical workaround. Internet access is restricted to Party officials, researchers, and selected institutions. Kakaku.com access is not a realistic concern for civilian populations.

Alternatives

In China, domestic alternatives include JD.com's price comparison features and Guanhuai.com, though these operate under state oversight. Taobao's shopping aggregation similarly functions with government compliance. Users seeking foreign platforms sometimes access Shopee (partially restricted in some regions but more accessible than Kakaku.com) or regional Vietnamese Tiki.vn, though these also face variable blocking.

Outlook

China's restrictions on foreign e-commerce platforms are tightening rather than easing. Recent enforcement under the 2021 Personal Information Protection Law targets foreign data flows, making Kakaku.com access less likely to be permitted. North Korea shows no indication of opening international commerce platforms. For Japanese users and regional traders, domestic alternatives remain necessary.