.online
3,554,486 domains are registered under .online, counted from the zone file built 22 Sept 2026. Check whether a name is free below — the answer is an exact match against all of them.
- Type
- Generic top-level domain (gTLD)
- Registry
- Radix Technologies Inc. SEZC
- Entered the DNS root
- 6 Mar 2015
- Registered domains
- 3,554,486
Check a .online name
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.