.gmx
.gmx is a brand extension, run by 1&1 Mail & Media GmbH since 2014. Only 1&1 Mail & Media GmbH, its affiliates and trademark licensees can register .gmx names; they are not for sale to the public.
| Type | Brand |
|---|---|
| Registry operator | 1&1 Mail & Media 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 | 5 September 2014 |
| DNSSEC | Signed |
| RDAP server | https://rdap.nic.gmx/ |
| WHOIS server | whois.nic.gmx |
| IANA record | iana.org/domains/root/db/gmx |
Look up a .gmx domain
The .gmx registry publishes registration data over RDAP. The free domain report reads it and shows a .gmx 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 Something out of date?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 .gmx extension?
1&1 Mail & Media GmbH is the registry operator for .gmx. The registry keeps the list of every .gmx name; registrars sell the names to the public.
Can anyone register a .gmx domain?
Only 1&1 Mail & Media GmbH, its affiliates and trademark licensees can register .gmx names; they are not for sale to the public.
When was .gmx created?
.gmx was added to the DNS root zone on 5 September 2014, according to IANA.
How do I look up who owns a .gmx domain?
The .gmx registry publishes registration data over RDAP at https://rdap.nic.gmx/ and over WHOIS at whois.nic.gmx. The free domain report on lemon.domains reads it for you and shows the registrar, dates and status.
Is .gmx signed with DNSSEC?
Yes. The .gmx zone is signed, so a .gmx domain can turn on DNSSEC once its registrar adds a DS record.