Updated February 2026
Domain blocking is an effective resource for brand owners to mitigate brand infringement and increase brand protection in the domain space.
In this post, we discuss how GlobalBlock fits into the domain blocking landscape.
What is Domain Blocking?
Domain blocking is an effective defensive tactic that should be a part of every brand’s larger domain portfolio strategy.
In practice, domain blocking allows a brand or trademark owner to make their mark or brand label ineligible for third-party registration across one or more domain extensions. This ability to block brand names and marks at scale hasn’t always been possible.
Before blocking products, the cost of registering domains defensively could become prohibitive, or in some cases, brands couldn’t meet certain eligibility requirements in a ccTLD or New gTLD — there were many reasons.
What is Defensive Domain Registration?
This term refers to a common practice in domain portfolio management in which brands actively register their names, marks, misspellings, and other brand-related terms, often across a multitude of open TLDs. Defensive domain registration is practiced to prevent third parties from registering and abusing those brand and brand-adjacent terms, or to prevent cybersquatting. As mentioned above, this portfolio management tactic can become cost-prohibitive or impossible due to eligibility requirements.
Now, let’s explore GlobalBlock and how it helps make defensive blocking manageable and easier to incorporate into a thoughtful domain portfolio strategy.
What is GlobalBlock?
GlobalBlock is a new unified domain blocking service offered by the Brand Safety Alliance. As part of their mission, the alliance aims to, “…develop products and services that allow brand owners to protect their online identity,” thereby giving brand owners the “unprecedented ability to protect [their] intellectual property.”
In short, GlobalBlock allows brands to protect their brand labels by blocking them from registration across hundreds of TLDs while making them accessible for regular registration and use by the brand at the brand’s discretion. What’s a brand label? It’s the part of the domain name that contains your brand name. Oftentimes, it makes up the SLD or second-level domain, as seen in the image below.
How Many Domain Extensions or TLDs Does GlobalBlock Cover Under Its Block?
The GlobalBlock service currently blocks domains across 700+ domain extensions, with the service expected to expand to 750+ extensions by the end of 2026 and 1200+ by the end of 2027, pending the applications in ICANN’s next round of new gTLDs.
It brings together registry operators of both ccTLDs and gTLDs and works with them to offer a comprehensive brand protection mechanism: their unified multi-registry blocking service. That service is offered in two tiers.
Brand owners may select from the following levels of domain blocking:
- Standard GlobalBlock
- Provides exact match domain blocking
- GlobalBlock+
- Provides increased protection by additionally blocking a select range of look-alike variations often used in online scams
How Does GlobalBlock Benefit Corporate Domain Portfolio Management?
To fully understand what an advance GlobalBlock is to domain portfolio strategy and management, it’s important that we look at how far we’ve come in the history of domain blocking.
Previously, domain blocking services were smaller in scale, and brand owners worked with multiple registries independent of one another to defensively block their brand marks across the extensions each registry offered. Some of these, like the Sunrise B program that was replaced by AdultBlock in 2019, may be familiar to you. As additional new gTLDs are introduced, the scope of blocking coverage needed by brand holders increases.
With the introduction of GlobalBlock, which allows registries to band together and offers a comprehensive domain blocking service, the amount of time a brand owner needs to spend managing domain registrations is reduced.
GlobalBlock Coverage Extends to Block Adult-Themed TLDs
As of October 2024, GlobalBlock offers additional blocking and protection for your brand in adult-themed TLDs. These TLDs, .xxx, .sex., .porn, and .adult present inherent risks to brand holders trying to protect their trademarks. Brand infringement and impersonation in this space can be detrimental to a brand’s image. Until the recent addition of adult-themed TLD coverage to GlobalBlock, these TLDs were only blockable through a separate solution, AdultBlock. Their inclusion in GlobalBlock’s coverage enables brand holders to protect themselves in a broader scope, particularly with GlobalBlock’s homoglyph coverage, described in detail below, that blocks domains with confusingly similar characters to one’s marks from registration and possible use by bad actors in nefarious ways.
GlobalBlock Service Levels and Details as Offered by Markmonitor
GlobalBlock and GlobalBlock+ Features
Both GlobalBlock and GlobalBlock+ include an essential feature called Priority AutoCatch. It allows brand holders to reserve previously registered domains, and when those registrations expire and the domains drop, Priority AutoCatch moves them under a brand holder’s block.
Previously, if someone had your brand name registered in a domain, you’d need to look at the WHOIS information to determine when the registration expired, and if it wasn’t renewed, you’d have to manually monitor and manage the process of registering it or adding it to an existing block. Now, Priority AutoCatch takes the effort out of the process for domain managers and reduces potential brand risk.
Unlimited Label Blocking and Homoglyph Variant Blocking are part of the GlobalBlock+ service and take brand protection to the next level. Unlimited Label blocking means a brand holder can protect a limitless number of variations of their root trademark in their block protection. Homoglyph variant blocking blocks look-alike domains that are deceptive and frequently used in fraudulent activities, such as when bad actors replace an ASCII character with a Unicode character to look like a well-recognized brand name.
GlobalBlock Eligibility Requirements
GlobalBlock is here to help protect brand holders online, and so they have expanded upon the traditional blocking eligibility requirement of having a validated Signed Data Mark File through the Trademark Clearinghouse.
Meeting any of the criteria below makes brand holders eligible for the GlobalBlock service:
- Registered Trademarks: An active nationally or regionally registered trademark.
- Unregistered Trademarks: A mark created by a business or individual to signify or distinguish a product or service.
- Company or organization name: Registered Companies & Trading As names.
- Celebrity names: Famous persons, sports stars and personalities, political figures, actors, social media celebrities, and public figures.
How Does Domain Blocking Benefit Brand Holders?
Let’s face it: developing a brand strategy in the domain name space is challenging but rewarding.
That said, it’s a vital undertaking, made up of things like knowing which domains to register (both proactively and defensively), understanding when it makes more sense to block domains, and then learning how to create domain-specific strategies based on the names you’ve registered. You also need to be mindful of cost and what makes sense within your organization’s budget. These and many other considerations come into play when designing your brand strategy in the domain space.
Leverage GlobalBlock as Part of Your Domain Strategy
To learn more about domain blocking or GlobalBlock and how it can serve you as a brand holder, please contact your Domain Portfolio Advisor or request a GlobalBlock demo here.
