Live lookups across 1,437 top-level domains
One name, every extension
Type the name you want. We query every top-level domain in the IANA root zone in real time and tell you which ones are still free.
- 1,437
- TLDs from the IANA root zone
- 1,206
- TLDs with an RDAP endpoint
- 871
- TLDs with a WHOIS server
- DNS → RDAP → WHOIS
- three layers, each a fallback
How it works
01
01
Three-layer live lookup
DNS for a fast verdict, then the registry's RDAP endpoint, then WHOIS as a fallback. Each layer stops as soon as it has an answer.
02
02
The whole root zone
The TLD list comes straight from IANA: 1,100+ new gTLDs and 300+ country codes, synced daily.
03
03
Evidence you can read
Every result can be expanded to the raw RDAP or WHOIS response, with registrar, creation and expiry dates.
WHOIS · RDAP
Check a single domain
AI
Stuck on a name?
Describe your project, get AI suggestions, and see which ones are still free to register.
Latest news
All news →Oct 27, 2026
TLDSweep is liveScan every TLD, watch domains, registrar rankings.
TLD Encyclopedia
Registry, operator, WHOIS and RDAP servers and registration entry point for every extension.