.online
.online is a generic extension, run by Radix Technologies Inc. SEZC since 2015. Anyone can register a .online name through a registrar that sells it.
| Type | Generic |
|---|---|
| Registry operator | Radix Technologies Inc. SEZC |
| Who can register | Anyone |
| In the root zone since | 16 March 2015 |
| DNSSEC | Signed |
| RDAP server | https://rdap.radix.host/rdap/ |
| WHOIS server | whois.nic.online |
| IANA record | iana.org/domains/root/db/online |
Registrars that sell .online
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All 28 registrars for .online. Other registrars may sell it too.
Look up a .online domain
The .online registry publishes registration data over RDAP. The free domain report reads it and shows a .online domain's registrar, dates, status and DNS in one place. For the raw record, use the WHOIS lookup.
More extensions from Radix Technologies Inc. SEZC
| .site | Generic · 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 Something out of date?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 .online extension?
Radix Technologies Inc. SEZC is the registry operator for .online. The registry keeps the list of every .online name; registrars sell the names to the public.
Can anyone register a .online domain?
Yes. Anyone can register a .online name through a registrar that sells it.
When was .online created?
.online was added to the DNS root zone on 16 March 2015, according to IANA.
How do I look up who owns a .online domain?
The .online registry publishes registration data over RDAP at https://rdap.radix.host/rdap/ and over WHOIS at whois.nic.online. The free domain report on lemon.domains reads it for you and shows the registrar, dates and status.
Is .online signed with DNSSEC?
Yes. The .online zone is signed, so a .online domain can turn on DNSSEC once its registrar adds a DS record.