Name Collisions Between ICANN and Web3 Avoiding Confusion

One of the emerging fault lines in the domain name ecosystem sits at the intersection of traditional ICANN-governed namespaces and the rapidly growing Web3 landscape of blockchain-based naming systems. Both frameworks aim to provide identity and addressing solutions for the internet, but they operate with fundamentally different governance models, technical underpinnings, and audiences. The collision between these two systems is no longer hypothetical. With blockchain-based domains gaining traction through services like ENS, Unstoppable Domains, and Handshake, and ICANN preparing future rounds of new gTLDs, there is a real and growing risk of name collisions that could create confusion, misrouting, and even disputes that undermine trust in both environments. Avoiding this confusion requires a nuanced understanding of how the two systems overlap, where risks are greatest, and what strategies can prevent fragmentation of the global namespace.

ICANN’s model has always been rooted in a centralized governance structure that prioritizes global interoperability. The DNS overseen by ICANN and managed by registries and registrars is designed to ensure that a name resolves the same way everywhere in the world. The integrity of this system depends on uniqueness: once .com belongs to Verisign, no other operator can issue .com in parallel. This model has served the internet well for decades, ensuring consistency across billions of users and devices. Web3 naming systems, however, take a different approach. Built on decentralized blockchains, these systems allow multiple namespaces to exist simultaneously, with resolution dependent on which protocol or browser plug-in a user has adopted. A .eth domain may resolve in a crypto wallet, a .crypto address may work through a browser extension, and a .xyz domain—though technically an ICANN-approved gTLD—might also be mapped onto blockchain infrastructure for alternative use cases. To an average user, these overlapping namespaces blur together, creating fertile ground for confusion.

Name collisions occur when identical or similar strings are delegated in both environments, but they resolve to different endpoints depending on context. A user typing example.crypto into a Web3-enabled wallet may be taken to a blockchain-based resource, while typing the same string into a mainstream browser without extensions may produce an ICANN DNS lookup that fails. Similarly, .eth domains have no standing in the ICANN root but are widely recognized within the Ethereum community. If ICANN were ever to delegate .eth as a legitimate gTLD in a future round, it could produce catastrophic confusion between the established Web3 use and the newly created DNS version. This is not speculation but an increasingly realistic possibility as ICANN expands the namespace and Web3 adoption accelerates.

The risks of name collisions go beyond mere inconvenience. For businesses, collisions can result in brand dilution or misdirected traffic. Imagine a fintech startup that secures its identity on Ethereum with a .eth address only to discover that ICANN later delegates .eth to a registry selling domains to unrelated parties. Users accustomed to one resolution path may end up at an entirely different website, creating opportunities for fraud, phishing, or reputational damage. For regulators, collisions create jurisdictional puzzles. Which system should have priority, the centralized ICANN process with decades of institutional legitimacy, or the decentralized blockchain system that has already created de facto adoption among millions of users? Without clear rules, disputes could proliferate, leading to costly litigation or fragmented solutions that erode confidence in internet addressing altogether.

Avoiding collisions requires both technical foresight and policy innovation. On the ICANN side, recognition of blockchain-based namespaces as potential collision risks should inform future rounds of gTLD applications. Just as ICANN has historically blocked certain strings for security reasons, it may need to reserve strings that already enjoy widespread use in blockchain systems to prevent disruptive overlap. However, such an approach raises its own controversies, as it implicitly acknowledges the legitimacy of alternative roots that ICANN has traditionally dismissed. On the Web3 side, developers of blockchain naming systems must grapple with the realities of mainstream adoption. Building namespaces that overlap with ICANN TLDs may generate short-term familiarity but ultimately creates long-term user confusion. Designing unique namespaces or working toward interoperability with the existing DNS could provide more sustainable paths forward.

Technical solutions may help bridge the divide. Projects are already experimenting with gateways that allow blockchain-based domains to resolve through traditional DNS infrastructure, often by mapping them to existing ICANN-recognized TLDs. For example, a .eth domain might also resolve under a DNS-based .xyz or .luxe mirror, providing a bridge between ecosystems. While imperfect, these hybrid models reduce the immediate risk of collisions by creating consistency across contexts. However, they also reintroduce centralized elements into decentralized systems, raising philosophical debates about whether Web3 naming compromises its principles by relying on ICANN-governed intermediaries.

Education is another crucial piece of the puzzle. Much of the confusion arises because end users do not distinguish between DNS and blockchain-based naming systems. To most people, a domain is simply a domain, regardless of whether it is resolved through ICANN’s root or Ethereum smart contracts. Clearer communication from both registrars and blockchain domain providers about scope, limitations, and resolution requirements can help set realistic expectations. Without education, collisions will inevitably be experienced as failures, eroding trust in whichever system appears less reliable to the user at that moment.

The economic implications of collisions are also significant. Premium blockchain-based domains are already trading on secondary markets for substantial sums, with investors betting on their long-term value. At the same time, ICANN’s namespace has an established multibillion-dollar aftermarket for traditional domains. If collisions undermine confidence in the uniqueness of names, valuations in both markets could be destabilized. Investors could find themselves holding assets that lose credibility because they resolve inconsistently across user contexts. This risk is amplified by the speculative nature of both ecosystems, where value depends heavily on perception and trust. Preventing collisions is therefore not only a technical or policy imperative but a financial one as well.

Some have proposed that ICANN and Web3 naming communities establish formal dialogue, perhaps even collaborative frameworks. While ideological differences remain stark—centralized versus decentralized governance, regulatory compliance versus censorship resistance—both systems ultimately serve the same function: enabling humans to navigate the digital world through memorable identifiers. If the two camps can agree on shared principles of uniqueness and user protection, they may be able to avoid the worst forms of collision. Without such dialogue, the risk is a fractured internet where users are forced to choose between competing roots, undermining the universality that has long been the hallmark of the web.

The broader lesson is that the internet’s namespace is no longer the exclusive domain of ICANN and traditional registries. Web3 has introduced a parallel universe of naming that cannot be ignored, and collisions are the fault line where the two worlds intersect. For businesses, investors, regulators, and technologists, avoiding confusion requires acknowledging the legitimacy and momentum of both systems while seeking ways to align them. The stakes are high: if collisions proliferate unchecked, the very promise of a universal, consistent, and reliable internet could erode, replaced by a patchwork of competing addressing systems. The opportunity lies in proactive collaboration, education, and innovation to ensure that as the internet evolves, it does so without losing the coherence that made it powerful in the first place.

One of the emerging fault lines in the domain name ecosystem sits at the intersection of traditional ICANN-governed namespaces and the rapidly growing Web3 landscape of blockchain-based naming systems. Both frameworks aim to provide identity and addressing solutions for the internet, but they operate with fundamentally different governance models, technical underpinnings, and audiences. The collision…