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List of domain extensions

.icu

.icu is a generic extension, run by Shortdot SA since 2015. Anyone can register a .icu name through a registrar that sells it.

Check .icu names
TypeGeneric
Registry operatorShortdot SA
Who can registerAnyone
In the root zone since2 May 2015
DNSSECSigned
RDAP serverhttps://rdap.centralnic.com/icu
WHOIS serverwhois.nic.icu
IANA recordiana.org/domains/root/db/icu

Registrars that sell .icu

Artfiles logo
Artfiles
Integrated
Atom logo
Atom
Integrated
DNSimple logo
DNSimple
Integrated
Domeneshop logo
Domeneshop
Integrated
Dynadot logo
Dynadot
Integrated
Gandi
Integrated
hosting.de logo
hosting.de
Integrated
Hostinger
Integrated
Internet.bs logo
Internet.bs
Integrated
INWX logo
INWX
Integrated
Name.com logo
Name.com
Integrated
Namecheap
Integrated

All 21 registrars for .icu. Other registrars may sell it too.

Look up a .icu domain

The .icu registry publishes registration data over RDAP. The free domain report reads it and shows a .icu domain's registrar, dates, status and DNS in one place. For the raw record, use the WHOIS lookup.

More extensions from Shortdot SA

.sbsBrand · 2015
.cyouGeneric · 2015
.bondGeneric · 2015
.cfdGeneric · 2015

New to extensions? The guide to how domain extensions work covers generic, country-code and brand extensions. For who sells extensions in general, see the list of domain registrars.

Sources: the IANA root zone database and the ICANN list of generic extensions (refreshed 2026-10-24). Something out of date? Tell us.

Frequently asked questions

Who runs the .icu extension?

Shortdot SA is the registry operator for .icu. The registry keeps the list of every .icu name; registrars sell the names to the public.

Can anyone register a .icu domain?

Yes. Anyone can register a .icu name through a registrar that sells it.

When was .icu created?

.icu was added to the DNS root zone on 2 May 2015, according to IANA.

How do I look up who owns a .icu domain?

The .icu registry publishes registration data over RDAP at https://rdap.centralnic.com/icu and over WHOIS at whois.nic.icu. The free domain report on lemon.domains reads it for you and shows the registrar, dates and status.

Is .icu signed with DNSSEC?

Yes. The .icu zone is signed, so a .icu domain can turn on DNSSEC once its registrar adds a DS record.