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List of domain extensions

.koeln

.koeln is a generic extension, run by domainworx Service & Management GmbH since 2014. Anyone can register a .koeln name through a registrar that sells it.

TypeGeneric
Registry operatordomainworx Service & Management GmbH
Who can registerAnyone
In the root zone since5 March 2014
DNSSECSigned
RDAP serverhttps://rdap.ryce-rsp.com/rdap/
WHOIS serverwhois.ryce-rsp.com
IANA recordiana.org/domains/root/db/koeln

Registrars that sell .koeln

Active24 logo
Active24
Integrated
ALL-INKL.COM logo
ALL-INKL.COM
Integrated
DNSimple logo
DNSimple
Integrated
Dynadot logo
Dynadot
Integrated
Gandi
Integrated
hosting.de logo
hosting.de
Integrated
Internet.bs logo
Internet.bs
Integrated
INWX logo
INWX
Integrated
Netim logo
Netim
Integrated
OVHcloud
Integrated

From the list of domain registrars. Other registrars may sell it too.

Look up a .koeln domain

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

More extensions from domainworx Service & Management GmbH

.cologneGeneric · 2014

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 Something out of date?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 .koeln extension?

domainworx Service & Management GmbH is the registry operator for .koeln. The registry keeps the list of every .koeln name; registrars sell the names to the public.

Can anyone register a .koeln domain?

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

When was .koeln created?

.koeln was added to the DNS root zone on 5 March 2014, according to IANA.

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

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

Is .koeln signed with DNSSEC?

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