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Kruno Golubić
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A domain by any other name

Kruno Golubić

Every .ai address ends in the country code of Anguilla, a British territory in the Caribbean. The island sells a lot of them. Google ignores the Anguilla part and treats .ai as a generic ending, the same way it treats .com.

Almost nobody who buys a .ai name is thinking of Anguilla. If the country plays no part in the choice, maybe the whole ending plays no part either.

In the balcony scene, Juliet argues that a name is only a label and that a rose would smell as sweet if we called it something else. Apply that to domains and a project should work as well under .xyz as under .com. I checked that argument against four things: the machines, the search engine, the audience and the neighbors. They do not all give the same answer.

When it was simple

For a long time the ending after the last dot, the top-level domain (TLD), came in two kinds. Country codes, built mostly on the ISO two-letter list, so Croatia got .hr. And a handful of generic ones from the eighties: .com, .net, .org, .edu, .gov, .mil, .int. The ending told you something. .gov was a government, .edu a university, .com a company.

That held until 2000. ICANN, the organization that coordinates the domain name system (DNS, the system that turns names into IP addresses), added .biz, .info, .name, .museum, .aero, .coop and .pro. A second batch around 2004 brought .mobi, .travel, .jobs, .asia.. In 2012 ICANN opened applications to anyone who could pay, and more than a thousand new endings followed. .xyz is one of them.

The machine does not care

When you type a name, your resolver (the server that does the lookup for you) asks the DNS root which servers handle the ending. Then it asks those servers about your name. Then it gets an address back. .com and .xyz are two entries in the same root zone. Guess what, the resolver treats both the same way.

The differences sit in the rules. Some countries restrict who may register under their code, and Google’s documentation tells you to research that first. And the company that runs an ending, the registry, sets prices and policies. You rent the name from it. More on that later in this series, in the 2026 round of new endings and in who owns your domain ending.

What Google does with the ending

Google’s documentation on multi-regional sites lists the signals it uses to guess which country a site is meant for. A country-code ending is a strong one. Every other ending counts as generic and carries no location. The same page says geotargeting can improve rankings in the target country, at the expense of other locales.

So a .de helps in Germany and costs you elsewhere. A .com does neither. Google also treats about twenty country codes as generic, because people use them that way: .io, .ai, .co, .me, .tv.. The list is on that page and can change. .eu and .asia count as generic too.

That page says nothing about .com outranking .org or .xyz. As far as it goes, a country code works as a location tag and every other ending works as no tag at all.

People are another matter

.edu says university to anyone who reads it. .ai says AI company, whether you are one or not. Whether that helps depends on what you want people to think in the first second.

What happened to .si

Slovenia has run .si since 1992. Register.si, the registry operated by ARNES (the Slovenian academic and research network), listed 198,535 names on 23 September 2026, according to Netcraft. Anyone can register one. The registry’s terms ask for a person or a company, with no residency rule.

On 22 September, President Trump told the UN General Assembly that the US would call AI “super intelligence”, SI. On 29 September he signed Executive Order 14434, which tells the federal executive branch to use “Super Intelligence” and “SI” instead of “Artificial Intelligence” and “AI” wherever the law allows.

SI is also the ISO code for Slovenia. People noticed. Netcraft, a security company that tracks the internet, counted 4,794 new .si registrations in 24 hours on 23 September and 13,603 on 1 October. It ties the jump to the speech and the order. It also found that just over half of the .si names it saw at one registrar, Dynadot, were listed for resale.

Now run the rose question on it. The resolver treats .si like any other ending. Google does not. The generic country codes are listed on that same multi-regional page, and .si is not among them. So a .si site reads as aimed at Slovenia, and the page says geotargeting can help rankings in the target country at the expense of other locales. The list can change. Today a global product on a .si name sends a Slovenian signal that nobody intended.

Netcraft had not seen a rise in phishing on .si as of 1 October, so that front is quiet for now.

Slovenia did not change .si. What changed is what people think two letters mean.

Bad neighbors

Interisle and Spamhaus publish regular reports on where phishing and spam domains are registered, and the abuse piles up in cheap endings with little vetting. .com has the most reports in raw numbers, simply because it is the biggest. Among newer endings, .top and .xyz appear near the top. Interisle’s 2026 data shows .top, a small ending next to .com, drawing far more phishing than its size would suggest.

Some security vendors now rate whole endings by the share of their domains that show up in abuse reports. If your ending has a bad record, a new site on it may start with a handicap.

What to pick

The resolver does not care about your ending. Google mostly does not either, unless it is a country code. People do, and so do the filters between you and them.

For a project that has to last, I lean towards .com if the name is free, a country code if you serve one country, and anything else only when the name is worth the neighborhood. The neighborhood can change in a week, as .si showed. Own the name itself, not a slot under someone else’s name. Renew early. Read the registry’s rules once, because it writes them and it can change them.

A rose would smell the same under any name. Nobody asks a rose to pass a spam filter.


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