South Korea Blocks 27 Unregistered Crypto Exchanges, Extending Its Online Crackdown
South Korea blocks 27 foreign crypto exchange sites, tightening access and urging registration under new AML rules.
South Korean regulators announced Tuesday that the websites of 27 overseas crypto exchanges, including KuCoin, BitMart and MEXC, will be blocked within the country. The move follows last year’s bans on mobile app stores and closes a remaining route for investors to reach platforms that have not registered with the Financial Intelligence Unit (FIU). The action signals a broader push to enforce anti‑money‑laundering (AML) standards on digital‑asset services.
According to CoinDesk, the FIU said the Korea Communications Standards Commission approved the restrictions after reviews on Oct. 6 and 7. Any overseas‑hosted site that remains unregistered will be inaccessible to Korean users, while domestic operators will have their services terminated. The regulator did not set a time limit for the blocks nor a deadline for exchanges to register, but it warned that unregistered platforms could make fund recovery difficult for Korean traders.
What happened
The FIU’s decision expands a series of enforcement steps that began with the October 2023 ban on crypto‑exchange apps in Google Play and Apple’s App Store. This time the tool is a website block, which can be applied as soon as the FIU identifies unregistered activity, without a court order or proof of customer loss. The announcement listed 27 exchanges, among them KuCoin, BitMart and MEXC, and noted that 44 unregistered operators have already been referred to investigators. Only 28 virtual‑asset service providers are currently registered with the FIU, highlighting the gap the regulator aims to close.
Why it works that way
South Korea’s internet infrastructure allows the Communications Standards Commission to order Internet Service Providers (ISPs) to filter or redirect traffic to specific domain names. Once a domain is on the blocklist, browsers and apps that rely on local DNS resolution cannot reach the site, effectively cutting off access for users inside the country. The legal basis comes from the country’s AML and counter‑terrorism financing laws, which require any entity offering virtual‑asset services to register with the FIU and meet security standards. By targeting the web address rather than the app, regulators avoid the lengthy court processes required for takedown orders and can act quickly when a new exchange appears.
What changes because of it
For Korean investors, the immediate effect is fewer options to trade on foreign platforms that have not complied with local registration rules. Users who previously accessed KuCoin or BitMart via a web browser will now see a connection error, prompting them to either move funds to a registered exchange or withdraw entirely. The FIU’s warning that recovery of assets on unauthorized platforms may be problematic adds a risk‑management dimension: investors must weigh convenience against the possibility of being locked out of their holdings.
Registered domestic exchanges stand to gain market share as the pool of legally available services shrinks. Their compliance costs—such as AML reporting and custodial safeguards—are now a competitive advantage rather than a burden. On the other side, foreign exchanges lose a sizable user base; they must decide whether to invest time and resources to register in South Korea, which involves meeting stringent security and AML criteria, or to abandon the market altogether.
The broader picture ties into South Korea’s pending Digital Asset Basic Law, which would codify rules for issuance, trading, custody and supervision of digital assets. Once enacted, the law could formalize the registration requirement and possibly introduce penalties for non‑compliance, making the current blocks a precursor to a more permanent regime. Meanwhile, the FIU’s partnership with the Digital Asset eXchange Alliance (DAXA) to help affected customers withdraw funds indicates an awareness of the practical fallout from abrupt access cuts.
Investors and industry observers should watch three developments. First, whether any of the blocked exchanges submit registration applications and meet the FIU’s security and AML thresholds. Second, how quickly the Digital Asset Basic Law moves from proposal to enforcement, because the law will likely define the long‑term framework for what counts as a “registered” exchange. Third, any spill‑over effects on capital flows: South Korean investors moved roughly $110 billion out of domestic exchanges in 2025, and tighter online controls could either stem that outflow or push users toward peer‑to‑peer channels that evade regulation. The trade‑off here is clear: tighter controls aim to protect the financial system and deter illicit activity, but they also raise friction for legitimate traders who now have fewer avenues to manage their portfolios.
Overall, the website blocks reinforce South Korea’s strategy of using technical tools to enforce compliance quickly, while signaling to the global crypto industry that operating in the country will require formal registration and ongoing AML oversight. Those who value regulatory certainty will likely welcome the move; those who prioritize unrestricted access may look for alternative jurisdictions or decentralized solutions.
