What Happens When Malaysia Blocks a Gambling Website? The Technology Explained

The Malaysian Communications and Multimedia Commission (MCMC) has blocked more than 1,778 gambling websites, sharply reducing the gambling content Malaysians can reach. Malaysia makes no secret of its position: it does not allow online sports betting or any other form of online gambling, and the MCMC and the Royal Malaysia Police lead the effort against sites that target Malaysians.

But what actually happens when a gambling website is blocked? Does it vanish from the internet? Not at all. Blocking targets the systems that connect Malaysian users to a site. Internet service providers (ISPs) are instructed to stop their networks from reaching blacklisted addresses, so users in Malaysia see error or "access restricted" messages, while the site keeps running normally for everyone outside the country.

It helps to think of blocking in three stages: authorities identify a website, instruct ISPs to block it, and then check that the block works. Several organisations are involved in keeping all three going.

The legal basis for blocking

Malaysia's main gambling laws, the Common Gaming Houses Act 1953 and the Betting Act 1953, were written long before the internet and do not mention online gambling. They do, however, provide for enforcement against unlicensed gambling, and online betting falls within that; Malaysian courts have confirmed that the Common Gaming Houses Act can apply to computer-based gambling. There is no licensed online gambling platform in Malaysia, and the government has said it has no plans to change that.

The MCMC directs ISPs to block websites under its powers in the Communications and Multimedia Act 1998. Blocking sites and removing gambling promotions are the government's main tools for keeping betting content out of easy reach.

How authorities identify gambling websites

Authorities find sites to block in several ways:

• complaints and reports from the public and businesses;
• their own investigation of gambling promotions and suspicious sites;
• information shared by other agencies.

Years ago, a gambling site's name usually gave it away. After sustained crackdowns around the world, operators now use bland, unrevealing addresses, so authorities need more tools to identify them. The MCMC pays particular attention to sponsored gambling posts and social media channels, which lead back to the sites behind them.

Once a site is identified, investigators look at whether it is run from inside Malaysia. Local operators risk being tracked down, arrested and charged on top of having their site blocked. Ops Saga XI, the 2026 operation by the Royal Malaysia Police with MCMC support, led to 649 raids and 945 arrests during the World Cup period. When operators are based abroad, blocking their websites is often the main option.

How gambling websites are blocked

Malaysia mainly blocks gambling sites at the level of domain names and IP addresses, supported by filtering systems.

DNS blocking

Every website has a domain name, such as www.example.com. The Domain Name System (DNS) works like the internet's phone book, translating that name into the numerical address of the server hosting the site.

Most Malaysian internet users rely on their ISP's DNS servers. To block a gambling site, ISPs configure those servers so the blacklisted domain no longer leads to the real site. Instead, users get an error or a page saying access is restricted.

DNS blocking does not shut a website down. The site remains reachable outside Malaysia, and changes can take a while to take effect everywhere because of caching. It is also easy for operators to register a new domain, which is why blocking has to be repeated.

IP address blocking

Authorities can also block the IP addresses of gambling servers. Once an IP address is blocked, connections to it from Malaysian networks fail, and users see timeouts or network errors.

IP blocking has a major drawback: many websites can share one IP address, especially on large cloud hosting services. Blocking a shared address could cut off legitimate sites that have nothing to do with gambling. Large operators also spread their sites across many addresses. For these reasons, IP blocking is used more cautiously, and domain blocking remains the most common method.

URL filtering and deep packet inspection

More advanced systems can examine network traffic to identify and block requests to particular sites or pages, not just whole domains. Deep packet inspection, as it is known, looks at the contents of data passing through a network to decide what to allow. These techniques can complement DNS and IP blocking, making gambling content harder to reach.

Keeping blocks effective

Blocking a website is only the start. Authorities have to keep watching for operators that switch to new domains, mirror sites or new hosting. Offshore operators work hard to change addresses quickly, so enforcement agencies must constantly adapt, and new sites sometimes gain traction before they are found. Alongside blocking, the MCMC asks platforms to remove gambling promotions that point users to new addresses.

Conclusion

When Malaysia blocks a gambling website, the site does not disappear. It simply becomes unreachable through Malaysian networks, usually because ISPs stop resolving its domain name, and sometimes because its IP address or specific traffic is blocked. Each method has limits, and operators keep creating new addresses, so enforcement is a constant race. That is why blocking works alongside other tools: removing gambling promotions online, scrutinising payments and prosecuting operators based in Malaysia.