Key Takeaway:
A domain block helps you protect your online presence at scale, stopping infringing domain registrations and impersonations without an expensive, scattergun approach to defensive domain registrations.
Most brands only find out about an infringing domain after it’s already live and doing damage. A phishing page goes up, a customer gets scammed, and the legal team scrambles to file a takedown. By contrast, a domain block flips that timeline. Instead of reacting to bad registrations one at a time, you reserve a swathe of names before anyone else can register them.
By contrast, domain blocking lets a brand reserve its name, and close variations of it, across large numbers of domain extensions in one move. Nobody else can register those names for as long as the block stays in place. This domain strategy represents a shift from constant monitoring and takedown requests to proactive protection. It also helps lay the foundations for modern online brand protection strategies too.
Doing more with less
Traditional defensive domain protection means registering multiple variations of your brand name across dozens of extensions, then renewing all of them year after year. That strategy gets expensive fast, and it still leaves gaps. Scammers exploit these gaps, registering domains that brands miss, and tricking customers with new lookalikes before the brand you even know what’s happening.
Blocking mechanisms expand your coverage without the expensive registration and renewal costs. Rather than owning thousands of individual domains, a brand blocks its name across hundreds of TLDs at once. Businesses can also choose variations and different types of domain blocks to suit their strategy. Ultimately, it’s a flexible, cost-effective, and forward-thinking option for modern organizations.
A domain block vs. website blocking
It’s worth being clear about what domain blocking actually stops. Domain blocking prevents a name from being registered in the first place. It works at the registry level, before a domain even exists.
Website blocking works differently. It stops users or systems from accessing a site that’s already live, usually through browser extensions, firewalls, or DNS-level filtering. In that sense, website blocking represents a defensive tool for content you’ve already flagged as malicious.
Domain blocking, on the other hand, works preventively. A strong protection strategy uses both, along with takedowns, but domain blocking keeps the malicious site from ever getting registered to begin with.
Cybersquatting and the rise of phantom squatting
Cybersquatting has always relied on typos, brand confusion, and cheap registration. It’s still a real problem. ICANN’s own analysis of reputation block list data found that spam and phishing remain the most commonly reported abuse types tied to registered domains, and that pattern holds across both standard and internationalized domain names.
Now there’s a newer variant to worry about. Researchers recently documented a phenomenon called phantom squatting, and it comes from an unexpected source: AI tools themselves. Large language models sometimes invent web addresses that sound plausible but don’t actually exist. When those tools recommend a link, people and even other AI agents tend to trust it without checking. Attackers then register the exact domain a popular AI model tends to hallucinate, then build a phishing page or malware drop on it, and wait for the model to send them traffic.
We covered this shift in more detail in our breakdown of phantom squatting, including how attackers are timing their registrations to land just after a model starts recommending a fake address. The short version: this isn’t a fringe risk anymore. It’s a new front in cybersquatting, and it moves faster than manual monitoring can keep up with.
Want to see where your own domain portfolio stands against this kind of exposure? Explore EBRAND’s domain blocking solutions to see how proactive registration blocking fits into your protection strategy.
GlobalBlock: One domain block, many extensions
GlobalBlock offers one of the clearest examples of what modern domain blocking looks like in practice. Instead of registering a brand name domain by domain, GlobalBlock reserves it across a large, growing list of top-level domains through a single subscription. At the time of writing, GlobalBlock covers 780 extensions, but the number grows on a regular basis. New extensions get added to the list over time, so the protection keeps expanding without any extra work on the brand’s end.
GlobalBlock delivers for brands that want broad, ongoing coverage without the cost of registering hundreds of individual domains. One block covers the name across the whole list, and the list keeps growing.
AdultBlock: Protecting brands against sensitive extensions
AdultBlock takes the same underlying idea and applies it to a specific set of extensions built for adult content, including .xxx, .porn, .adult, and .sex. These extensions carry more reputational and legal risk than most, since a brand name registered under one of them can imply an association that never existed.
AdultBlock lets any brand, regardless of industry, block its name across that entire group of adult-specific extensions in one move. It’s especially useful for brands with no connection to adult content who still want to make sure nobody else registers their name there. You can find out more about how this works in our AdultBlock article.
DPML and other blocking mechanisms
Identity Digital’s Domains Protected Marks List, or DPML, also works at the registry level. Brands with a trademark can block their name across every extension Identity Digital operates, without registering a single domain. It’s one of the earliest large-scale blocking mechanisms and remains one of the most widely used.
Other registries and registry groups run their own equivalent programs, each with different eligibility rules, extension coverage, and pricing. The common thread across all of them is the same principle behind GlobalBlock: pay once, block broadly, and skip the cost and hassle of registering names you’ll never actually use.
Conclusions: Where a domain block leaves your brand
Cybersquatting isn’t going away, and phantom squatting shows it’s actually getting more automated, not less. Chasing down bad registrations after the fact will always be slower than blocking them before they happen. With that in mind, domain blocking delivers the tools to close that gap without registering hundreds of domains that you don’t need.
If you’re not sure where your brand currently stands, a portfolio review is the easiest way to find out. Get a free domain portfolio check and see exactly where the gaps are.
