.biz
1,266,752 domains are registered under .biz, counted from the zone file built 7 Aug 2026. Check whether a name is free below — the answer is an exact match against all of them.
- Type
- Generic-restricted top-level domain
- Registry
- Registry Services, LLC
- Entered the DNS root
- 26 Jun 2001
- Registered domains
- 1,266,752
Check a .biz name
Type a name to check it across every TLD we hold, and see free alternatives instantly.
Registry type, operator and root-zone date are from IANA’s root zone database, checked 7 Aug 2026. Registered counts are read from the zone file ICANN publishes through its Centralized Zone Data Service. A name absent from the zone has no nameservers, which strongly suggests it is unregistered, though a parked or expiring domain looks identical.