.icu domain: who runs it and who can register

.icu is run by ShortDot SA, a Luxembourg-registered outfit named as sponsoring organisation in the IANA delegation record and as Operator on the ICANN Registry Agreement, dated 8 January 2015. It wasn't always ShortDot's patch, though. IANA records show the domain was first delegated to One.com A/S in April 2015, then handed over to ShortDot in February 2018. ShortDot also owns a clutch of other extensions, including .cyou, .bond, .sbs and .cfd, and lists CentralNic as technical contact, which means CentralNic actually runs the backend, the shared registry database and the lookup servers, even though ShortDot is the one that signed with ICANN.

Here's how the layers break down in practice. The registry (ShortDot) sets policy and holds the ICANN agreement for .icu as a whole. Registrars such as Namecheap, Dynadot or Gandi are the companies you buy the domain from, reselling registry access under their own ICANN accreditation. You, the registrant, hold the registration itself and deal only with your chosen registrar for renewals, transfers and DNS changes. ICANN sits above all three, enforcing the base contract and consensus policies everyone has to follow.

Anyone can register a .ICU domain, anywhere in the world. There's no residency requirement, no need to be a registered business, and no restriction by industry, a point confirmed by multiple registrars including Dynadot. Individuals, companies and non-profits all register on a first-come, first-served basis once the sunrise period reserved for trademark holders has ended.

Naming rules sit at registry level. Names run from 1 to 63 characters and can use letters, numbers and hyphens, though hyphens can't occupy the third and fourth positions together, according to CentralNic Reseller's technical notes. Registration terms range from one year up to ten, per Namecheap's published terms. Past that, registry rules and registrar practice pull apart: each registrar sets its own identity or verification checks, and the registry itself holds back a batch of premium names, such as FUTURE.ICU and IMPACT.ICU, priced on non-standard terms set by ShortDot directly rather than by the registrars selling everything else.

Moving a .icu domain works the same way as any gTLD transfer under ICANN's rules: unlock it at your current registrar, grab the authorisation (EPP) code, then confirm the switch by email at the new registrar. One catch applies everywhere. ICANN locks a domain from transfer for 60 days after it's first registered, after a transfer, or after a change of registrant, unless the losing registrar allows an opt-out. The details sit in ICANN's Transfer Policy.

Registration runs from one to ten years, and renewals follow the same range (Namecheap). Beyond that, things get murkier. Registrars quote renewal grace periods anywhere from 30 to 40 days, then a redemption window of roughly 30 days before the domain gets deleted for good (Dynadot, Openprovider). Restore fees during that redemption window swing too, from around $143 to $184 depending on who you ask. There's no single, definitive registry policy tying these numbers together, so don't take any of it as gospel. Check the actual figures with your registrar before a renewal date sneaks up on you.

ShortDot's own marketing leans on live .icu sites to make its case, including amelietalks.icu, a spokesperson and actor's portfolio, as proof the extension works for personal branding (ShortDot). Trade coverage from CentralNic Reseller points to Intervals.icu and Comfy.icu as examples in the tech space, plus plenty of blogs, event pages and community projects using the extension for less flashy purposes.

Before you park a live project on .icu, a few things are worth knowing. There's no registry-imposed HTTPS or HSTS mandate here, so certificate setup depends entirely on your host or registrar, not any rule from the registry itself. On email, reviewers tend to rate .icu as carrying less inherent trust than the legacy TLDs, and some people still associate it with generic or spam-adjacent sites. Test it before you trust it for anything transactional or marketing-related. As a primary domain, .icu suits short-lived campaigns, portfolios and side projects far better than a long-term company identity. Several registrars bundle forwarding features by default, which tells you plenty about how the extension actually gets used, mostly to redirect traffic elsewhere rather than host it directly. One naming tip worth remembering: ICU is also shorthand for an intensive care unit, so check how your chosen name reads before the dot. Some combinations will accidentally read like a hospital department rather than "I see you".