List of domain extensions

.courses

.courses is a generic extension, run by Registry Services, LLC since 2015. Anyone can register a .courses name through a registrar that sells it.

TypeGeneric
Registry operatorRegistry Services, LLC
Who can registerAnyone
In the root zone since25 February 2015
DNSSECSigned
RDAP serverhttps://rdap.nic.courses/
WHOIS serverwhois.nic.courses
IANA recordiana.org/domains/root/db/courses

Registrars that sell .courses

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All 16 registrars for .courses. Other registrars may sell it too.

Look up a .courses domain

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

More extensions from Registry Services, LLC

.gayGeneric · 2019
.bostonGeneric · 2016
.ddsGeneric · 2016
.healthGeneric · 2016
.compareGeneric · 2016
.selectGeneric · 2016
.vipGeneric · 2015
.lawGeneric · 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 Something out of date?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 .courses extension?

Registry Services, LLC is the registry operator for .courses. The registry keeps the list of every .courses name; registrars sell the names to the public.

Can anyone register a .courses domain?

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

When was .courses created?

.courses was added to the DNS root zone on 25 February 2015, according to IANA.

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

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

Is .courses signed with DNSSEC?

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