.us domain lookup
Country code extension (ccTLD) for United States.
The United States' country code. Registrants must have a bona fide presence in the United States (the "US nexus" requirement).
Technical details
- Type
- ccTLD
- Registry
- Registry Services, LLC
- WHOIS server (port 43)
- whois.nic.us
- RDAP endpoint
- none
- Added to the root zone
- Feb 15, 1985
- IANA record last changed
- Aug 5, 2026
IANA data: Oct 6, 2026
What does the registry publish?
Based on the record of google.us (WHOIS, Oct 6, 2026):
- Registrar: published
- Creation date: published
- Last update: published
- Expiry date: published
- Status codes: published
- Name servers: published
- DNSSEC: published
- Registrant: published
- Abuse contact: published
Status codes in the sample record
- clientUpdateProhibited
- clientDeleteProhibited
- clientTransferProhibited
- serverUpdateProhibited
- serverDeleteProhibited
- serverTransferProhibited
What happens when a domain expires?
For country code extensions the periods depend on the registry. See the .us registry's rules for exact durations.
Questions about .us
›What is the .us whois server?
The port 43 WHOIS server for .us is whois.nic.us.
›Does .us support RDAP?
The IANA RDAP list has no endpoint for .us; lookups use WHOIS (port 43).
›How do I find when a .us domain expires?
Type the domain in the box above; if the registry publishes the expiry date, the whois card shows it along with the days left.
›Can I see who owns a .us domain?
According to our sample check this registry publishes some registrant data (such as the organisation name); personal data is usually redacted.