Domain names with a .io and .ai extension are gaining popularity. This article explains what .io domain names and .ai domain names stand for, why they have become so popular, and how you can start a legal procedure to claim a .io or .ai domain name.

 

What do .io and .ai domain names stand for?

 

The top-level domains “.io” and “.ai” are “country code” top-level domains, or “ccTLDs”. This means that they are linked to websites, connected to a specific country or area. In the case of “.ai”, this is Anguilla, an island in the Caribbean Sea that belongs to the Lesser Antilles. The top-level domain “.io” refers to domain names of websites from islands that belong to the British Indian Ocean Territory (a British overseas territory in the Indian Ocean).

 

.io domains and .ai domains: what are they used for?

 

The popularity of .ai and .io domain name registrations has little to do with their associated geographical areas. Their attractiveness comes from the fact that “IO” and “AI” are abbreviations for frequently used terms in the ICT and technology world. “IO” stands for input/output, a term describing the communication between a computer and the outside world (such as a human or other system). “AI” is the abbreviation for Artificial Intelligence, the science that focuses on providing intelligence to computers and other devices. The registration of a .io domain name or a .ai domain name is popular among companies that are active in the IT and technology sector.

 

What are the benefits of a .io domain name or a .ai domain name?

 

It is not only because these “country code” top-level domains correspond to abbreviations that are regularly used in the ICT sector that they are so popular. Another reason is that many .io and .ai domain names are still available for registration. Registrants of a new domain name can opt for this type of domain name extension if a domain name with a more general top-level domain (such as “.com”, “.net” or “.org”) is already occupied.

 

In other words, companies or individuals can choose to register a simple and catchy .ai or .io domain name, when their preferred ‘.com’ or ‘.eu’ domain name is no longer available. After all, short and memorable domain names are likely to attract more traffic.

 

How to legally claim a .io or .ai domain name?

 

If you have a brand or a trade name, and you notice that it is used in a “.io” or “.ai” domain name that is not yours, you can start a special legal domain name procedure to claim this domain name.

 

The procedural rules and conditions for claiming the domain name differ depending on whether it is a “.io” or a “.ai” domain name.

 

.ai domain name procedures

 

For .ai domain name procedures, the relevant rules are the so-called “Uniform Domain Name Dispute Resolution Policy” (UDRP), the related UDRP procedural rules and the arbitration centre’s supplemental rules for UDRP.

 

This means that the claimant in a .ai domain name procedure will have to prove three basic legal requirements:

 

(1) the .ai domain name is identical or confusingly similar to a trademark or service mark in which the complainant has rights; and

 

(2) the domain-name holder has no rights or legitimate interests in respect of the .ai domain name; and

 

(3) the .ai domain name was registered and is being used in bad faith.

 

.ai domain name disputes may be administered by the WIPO Arbitration and Mediation Center, the Czech Arbitration Court, Forum, the Asian Domain Name Dispute Resolution Centre (ADNDRC) or the Canadian International Internet Dispute Resolution Centre (CIIDRC). The fees vary depending on the dispute resolution provider chosen and whether the case is decided by a single-member or three-member panel.

 

 

.io domain name procedures

 

For .io domain names, disputes are governed by the .IO Domain Name Dispute Resolution Policy, the Rules for the .IO Domain Name Dispute Resolution Policy and the WIPO Supplemental Rules for .IO domain name disputes. Although the .IO Policy is closely based on the UDRP, it is a separate dispute resolution policy.

 

The person who starts a proceeding to claim a .io domain name (the complainant) must prove that: (i) the domain name is identical or confusingly similar to a trademark or service mark in which the complainant has rights; (ii) the current domain-name holder has no rights or legitimate interests in respect of the domain name; and (iii) the domain name was registered or is being used in bad faith.

 

This last requirement differs from the UDRP applicable to .ai domain names.Under the UDRP, the complainant must prove that the domain name was registered and is being used in bad faith, rather than merely proving one or the other.

 

The remedies available are the cancellation of the .io domain name registration or the transfer of the .io domain name to the complainant. In practice, transfer is the remedy most commonly requested.

 

Complaints concerning .io domain names must be filed with the WIPO Arbitration and Mediation Center. The fees vary depending on the number of domain names covered by the complaint and whether the dispute is decided by a single-member or three-member panel.

 

Read our previous blog post for more information on .com domain name claims (and other UDRP domain name disputes).

 

Article updated on 25 August 2026

 

Do you have questions about a .io or .ai domain name claim? Do not hesitate to contact us!

 

Bart Van Besien