When .io Domains Face Crisis: A Domain's Rise and Fall Altered by Geopolitics

Author: Gareth Edwards

Translation: TechFlow

Introduction

If you look closely, you'll notice that many cryptocurrency projects use websites with the .io domain extension.

It's not just crypto—.io domains are also favored by emerging tech companies. From github.io to countless innovative startups, .io has become a cultural symbol within the tech world.

The UK government recently announced it will transfer sovereignty of the Chagos Islands to Mauritius—a seemingly distant diplomatic decision that could lead to the disappearance of the .io domain.

This article dives into the story, revealing the little-known connections between the digital world and real-world politics, and the profound impact this might have on the tech industry.

Original article below:

Gareth Edwards, who usually documents forgotten histories of Silicon Valley in his column "Crazy People."

When the UK government announced last week that it would relinquish sovereignty over a group of islands in the Indian Ocean, Gareth immediately recognized the digital implications: the end of the .io domain suffix.

In this article, he explores how geopolitical changes can unexpectedly disrupt the digital world. His examination of historical precedents—such as the collapse of the Soviet Union—offers valuable context for tech founders, users, and observers alike. Read on to understand the unexpected intersection of international relations and internet infrastructure.

On October 3, the UK government announced it would give up sovereignty over a small tropical archipelago in the Indian Ocean known as the Chagos Islands. These islands will be transferred to the neighboring island nation of Mauritius, located about 1,100 miles off the southeastern coast of Africa.

This story didn’t make headlines in tech news—but perhaps it should have.

The decision to hand over these islands to a new sovereign will result in the loss of one of the most popular top-level domains (TLDs) in the tech and gaming industries: .io.

Whether it’s Github.io, the game platform itch.io, or Google I/O (a trend arguably started in 2008), .io has long been a staple in the tech lexicon. Its popularity is sometimes explained by its abbreviation for “input/output,” referring to data received and processed by any system.

But what’s often overlooked is that it’s not just a clever acronym. It’s a country-code top-level domain (ccTLD), meaning it carries political significance far beyond the digital realm.

Since 1968, the UK and US have operated a major military base on the Chagos Islands (officially called the British Indian Ocean Territory), but neighboring Mauritius has long contested British sovereignty. The Mauritian government has argued for decades that the UK illegally retained control when Mauritius gained independence. This dispute, lasting over 50 years, has now been resolved. In exchange for a 99-year lease on the military base, the islands will become part of Mauritius.

Once the treaty is signed, the British Indian Ocean Territory will cease to exist. International bodies will update their records. In particular, the International Organization for Standardization (ISO) will remove the country code “IO” from its standards. The Internet Assigned Numbers Authority (IANA), which creates and delegates domain names, relies on these standards to determine which country-code top-level domains should exist. Once IO is removed, IANA will reject any new .io domain registrations and will automatically begin phasing out existing ones. (There is currently no official statistic on the number of existing .io domains.)

In official terms, .io—and countless websites using it—will disappear. At a time when individual domains can be worth millions of dollars, this serves as a stark reminder that forces beyond the internet still shape our digital lives.

When Domains Outlive Nations

Erasing an entire country or territory from the world map is extremely rare, so one might wonder why the process of removing a domain is so clearly defined.

The answer is simple: history.

Two organizations govern domains and internet addresses. IANA decides what does and doesn’t become a top-level domain, such as .com, .org, .uk, or .nz. Originating at the University of Southern California, it wasn’t formally established until 1994, when it won a U.S. government contract. As the internet grew, it became clear a more formal structure was needed. By 1998, IANA became part of a new organization: the Internet Corporation for Assigned Names and Numbers (ICANN). Headquartered in the United States, ICANN was given broader responsibilities, overseeing the stability of internet operations and ensuring international interests are represented.

These two organizations may seem to play mundane roles, yet they’ve found themselves making some of the toughest decisions on the global internet.

On September 19, 1990, IANA created the top-level domain .su and delegated it to the Soviet Union. Less than a year later, the USSR collapsed. At the time, no one considered what would happen to the .su domain—the internet as we know it was still years away. As a result, the .su domain was handed over to Russia, operating alongside its own national domain (.ru). The Russian government agreed it would eventually be phased out, but there were no clear rules about governance or timeline.

For top-level domains, ambiguity is the worst possible outcome. Unintentionally, this decision created an environment where .su became a digital Wild West. Today, it’s a largely unregulated top-level domain, a haven for Russian covert operations, supremacist content, and cybercrime.

A few years later, in 1992, IANA learned another painful lesson during the breakup of Yugoslavia at the end of the Balkan Wars. After the dissolution, Serbia and Montenegro attempted to adopt the name “Federal Republic of Yugoslavia.” Slovenia and Croatia objected, arguing this implied Serbia and Montenegro were the legitimate successors to Yugoslavia. Both countries filed protests with the United Nations.

Throughout the early 1990s, the international status of Serbia and Montenegro remained disputed, and IANA was unsure who should control .yu, Yugoslavia’s top-level domain. Email and internet access had become essential for research and international dialogue, and IANA’s indecision led to an extraordinary episode of academic espionage.

According to journalist Kaloyan Kolev, Slovenian scholars traveled to Serbia in late 1992. Their destination: Belgrade University, the nation’s capital. Upon arrival, they broke in, stole all the hosting software, and seized the domain records for .yu—the very materials needed to take control. For the next two years, the .yu domain was informally operated by ARNES (the Slovenian Academic and Research Network), which repeatedly denied involvement in the original theft.

ARNES rejected all new domain requests from Serbian institutions, severely limiting the country’s ability to participate in the growing internet community. The situation became so chaotic that in 1994, Jon Postel, IANA’s founding manager, personally intervened, overriding IANA regulations to forcibly return control of the .yu domain to Belgrade University.

In 2006, Montenegro declared independence from Serbia. With the digital revolution advancing steadily, IANA was determined not to let chaos repeat. It created two new top-level domains: .rs for Serbia and .me for Montenegro. The launch of both required the formal termination of .yu. This didn’t happen until 2010, but IANA ultimately got its way. After these experiences, the organization established a new set of stricter rules and timelines for phasing out top-level domains when a country ceases to exist.

These rules will soon apply to .io. They are firm. They are clear. Ideally within three to five years after the country code no longer exists, the domain must also cease to exist. Just like tenants being told their landlord is selling the house and they must move, every individual and company using a .io domain will receive the same notice.

The Long Tail of Real-World History

.io is especially popular among startups, particularly those in the crypto space. These companies often embrace an original principle of the internet—the idea that cyberspace grants users a form of independence.

Yet the long tail of real-world history may force them to make significant changes.

IANA could bend its own rules to allow .io to continue. Money talks, and a lot of money is tied to .io domains. However, the legacies of the Soviet Union and Yugoslavia remain vivid. IANA may fear that loose handling of top-level domains will come back to haunt it.

Whatever happens, the warning to future tech founders is clear: choose your top-level domain carefully. Physical history has never been as separate from our digital future as we might imagine.