.fresenius
.fresenius is a brand extension, run by Fresenius Immobilien-Verwaltungs-GmbH since 2016. Only Fresenius Immobilien-Verwaltungs-GmbH, its affiliates and trademark licensees can register .fresenius names; they are not for sale to the public.
| Type | Brand |
|---|---|
| Registry operator | Fresenius Immobilien-Verwaltungs-GmbH |
| Who can register | Brand owner only Brand extension: only the registry operator, its affiliates and trademark licensees register names. |
| In the root zone since | 9 January 2016 |
| DNSSEC | Signed |
| RDAP server | https://rdap.centralnic.com/fresenius |
| WHOIS server | whois.nic.fresenius |
| IANA record | iana.org/domains/root/db/fresenius |
Look up a .fresenius domain
The .fresenius registry publishes registration data over RDAP. The free domain report reads it and shows a .fresenius domain's registrar, dates, status and DNS in one place. For the raw record, use the WHOIS lookup.
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 Something out of date?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 .fresenius extension?
Fresenius Immobilien-Verwaltungs-GmbH is the registry operator for .fresenius. The registry keeps the list of every .fresenius name; registrars sell the names to the public.
Can anyone register a .fresenius domain?
Only Fresenius Immobilien-Verwaltungs-GmbH, its affiliates and trademark licensees can register .fresenius names; they are not for sale to the public.
When was .fresenius created?
.fresenius was added to the DNS root zone on 9 January 2016, according to IANA.
How do I look up who owns a .fresenius domain?
The .fresenius registry publishes registration data over RDAP at https://rdap.centralnic.com/fresenius and over WHOIS at whois.nic.fresenius. The free domain report on lemon.domains reads it for you and shows the registrar, dates and status.
Is .fresenius signed with DNSSEC?
Yes. The .fresenius zone is signed, so a .fresenius domain can turn on DNSSEC once its registrar adds a DS record.