Open WHOISbuilt by Just

.koeln WHOIS lookup

.koeln is managed by domainworx Service & Management GmbH. Its registry answers lookups over RDAP at rdap.ryce-rsp.com, so a .koeln lookup here reads the registry directly.

Managed by

domainworx Service & Management GmbH
As listed by IANA

RDAP

rdap.ryce-rsp.com
Lookups read the registry live

WHOIS server

whois.ryce-rsp.com

DNSSEC

Signed
The ending is signed in the root zone

In the root zone since

20 February 2014

Registry website

www.nic.koeln

What a .koeln lookup shows

The registrar, when the domain was registered and when it expires, every status code in plain words, nameservers and DNSSEC, plus the mail setup read from DNS.

WHOIS vs RDAPWho owns a domain?All endings

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Ending: .koeln
Managed by: domainworx Service & Management GmbH
RDAP base URL: https://rdap.ryce-rsp.com/rdap/
WHOIS server: whois.ryce-rsp.com
DNSSEC signed in the root: yes
Source: IANA root zone database and RDAP bootstrap, read 2026-10-31
Lookup URL: https://openwhois.org/#d=example.koeln