Domain Tools
Domain Availability Checker
Check whether a domain name is registered or available, using public WHOIS/RDAP data.
Enter a domain name to check whether it's already registered or potentially available - based on public WHOIS/RDAP registration data.
Found an available domain? JustChecker can start monitoring it the moment you register it.
Frequently Asked Questions
This checks live public WHOIS/RDAP data at the moment of the query - domain availability can change within seconds due to concurrent registrations elsewhere, so always confirm with your actual registrar immediately before completing a purchase.
Some domains are reserved by the registry itself, restricted for a specific eligible party, or briefly held during a prior registration's grace/redemption period - technical public availability doesn't always guarantee it's purchasable by anyone.
This tool checks one specific domain (including its TLD) per lookup - checking the same name across several different TLD extensions requires a separate lookup for each one.
After expiry, a domain typically passes through registry grace and redemption periods (sometimes lasting weeks) before actually being released back to public availability - "expired" doesn't mean "immediately available".
No - this is a read-only lookup with no reservation effect whatsoever; if you find a domain available, you'll still need to register it through a registrar before someone else does.
No - checking availability doesn't signal interest to anyone else or affect the domain's status in any way; it's a passive, read-only query.