Domain Name Checker
Check availability across 90+ domain extensions instantly, live as you type
Start typing above — results appear automatically.
Live results via RDAP, the IANA-standardized domain registry protocol.
Similar available names
A few quick variations that are free right now.
Why people choose us
Private by design
Your input is processed securely and never sold. Client-side tools never leave your browser at all.
Instant & free
No installs, no waiting. Results in seconds, right in your browser, on any device.
Free forever
No sign-up, no watermarks, no limits. All client-side tools are free to use as much as you like.
How it works
- 1
Start typing a name — no button, the search starts automatically.
- 2
Watch each extension's status update live as its registry responds.
- 3
Found one you like? Click Register to claim it at a registrar.
Frequently asked questions
How is this different from a regular WHOIS lookup?⌄
This checks 90+ extensions at once, live, using RDAP — the structured, machine-readable protocol that's replacing WHOIS industry-wide. A single WHOIS lookup only checks one extension and returns unstructured text that's different for every registry.
Why do some extensions show "Unknown" instead of Available/Taken?⌄
That means the registry didn't respond in time or returned something unexpected — rather than guess, we show "Unknown" so you never get a false "Available" for a domain that's actually taken. Try again in a moment; it usually resolves.
Is this really free with no limits?⌄
Yes — no account, no paywall, no cap on how many names you can search. There's a generous per-IP daily limit purely to stop automated abuse from overwhelming the registries we query; normal use never comes close to it.