Type a name and see which extensions are registered and which look available. The checker combines two independent signals — the registry RDAP record and DNS delegation — so you get a fast, reliable answer without visiting a registrar that might front-run your search.
BetterNic never sells, logs or resells your searches. When something looks available, register it at the registrar of your choice.
How to use the Domain Availability Checker
- Enter a name with or without an extension.
- Pick the extensions to test, or keep the popular set.
- Press Check. Each extension shows Registered, Likely available or Unknown.
- Click a likely-available result to verify and register at a registrar you trust.
How it works
For each extension we first ask DNS for nameservers. If DNS returns NXDOMAIN, we confirm with the registry's RDAP server; a 404 there means no registration record exists. Premium and reserved names can still show as available but cost more or be blocked — the registrar's checkout is the final word.
When to use it
- Brainstorming startup names
- Finding the best open extension for a brand
- Checking hand-registration ideas quickly
Pro tips
- If .com is taken but parked for sale, check the asking price before settling for a weaker extension.
- Register matching social handles the same day.
Frequently asked questions
Is it safe to search domains here?
Yes. Queries go to public registries and DNS resolvers, not to a registrar that could register the name first.
Why does a name show 'likely available' but the registrar says taken?
It may be reserved, premium, or registered in the last few minutes. Registrar checkout is authoritative.
Can I check many names at once?
Use the Bulk Domain Checker for up to 200 names.