.us
.us is a country-code extension for the United States, run by Registry Services, LLC. A US nexus is required: US citizens and residents, organisations formed in the US, or those with a bona fide US presence.
| Type | Country code |
|---|---|
| Registry operator | Registry Services, LLC |
| Country | United States |
| Who can register | Rules apply A US nexus is required: US citizens and residents, organisations formed in the US, or those with a bona fide US presence. |
| DNSSEC | Signed |
| RDAP server | None listed |
| WHOIS server | whois.nic.us |
| IANA record | iana.org/domains/root/db/us |
Registrars that sell .us
| Integrated | |
| Integrated | |
| Integrated | |
| Integrated | |
| Integrated | |
| Integrated | |
| Integrated | |
| Integrated | |
| Integrated | |
| Integrated | |
| Integrated | |
| Integrated |
All 28 registrars for .us. Other registrars may sell it too.
Look up a .us domain
The .us registry publishes registration data over WHOIS. The free domain report reads it and shows a .us domain's registrar, dates, status and DNS in one place. For the raw record, use the WHOIS lookup.
More extensions from Registry Services, LLC
| .gay | Generic · 2019 |
| .boston | Generic · 2016 |
| .dds | Generic · 2016 |
| .health | Generic · 2016 |
| .compare | Generic · 2016 |
| .select | Generic · 2016 |
| .vip | Generic · 2015 |
| .law | 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 Something out of date?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 .us extension?
Registry Services, LLC is the registry operator for .us, the country-code extension for the United States. The registry keeps the list of every .us name; registrars sell the names to the public.
Can anyone register a .us domain?
A US nexus is required: US citizens and residents, organisations formed in the US, or those with a bona fide US presence.
How do I look up who owns a .us domain?
The .us registry publishes registration data over WHOIS at whois.nic.us. The free domain report on lemon.domains reads it for you and shows the registrar, dates and status.
Is .us signed with DNSSEC?
Yes. The .us zone is signed, so a .us domain can turn on DNSSEC once its registrar adds a DS record.