Domain name availability checker
Search any name and instantly check domain availability across 25 extensions — .com, .io, .ai, .dev and more.
Check domain name availability across 25+ extensions
handle.tools domain checker searches 25 domain extensions simultaneously using real-time RDAP (Registration Data Access Protocol) queries against each TLD's authoritative registry — so results are as fresh as they can be without caching stale data. Available domains show a direct Claim link to Namecheap pre-filled with that domain name, so you can register in seconds. Extensions covered include the popular tech stack (.com .io .ai .dev .app .co), creator favourites (.me .studio .design .gg .xyz), and international ccTLDs (.uk .ca .de .fr .us). Use it alongside the username checker to lock down your name across both social and web in one session.
Domain checker FAQ
Which domain extensions does the domain checker support?
The domain checker covers 25 TLDs: .com .io .ai .dev .co .app .net .me .org .xyz .gg .tech .design .store .online .info .biz .us .studio .shop .site .uk .ca .de .fr — all checked in real time against authoritative RDAP registries.
Is the domain availability checker free?
Yes — completely free with no account required. Search any name and see availability across 25+ domain extensions instantly.
How accurate is the domain availability check?
Checks use RDAP (Registration Data Access Protocol) queries directly against the authoritative registry for each TLD, giving you accurate real-time data. Results are best-effort — always confirm before purchasing.
Where can I register an available domain?
Each available domain has a Claim button that links directly to Namecheap's registration page pre-filled with that domain, so you can register in seconds.
Why do some domains show 'unknown'?
A handful of registries throttle RDAP queries or return ambiguous responses. 'Unknown' means the check couldn't confirm either way — always verify directly with a registrar before assuming it's available.
What's the difference between .io, .ai, and .dev?
.io is popular with tech startups, .ai with AI/ML projects, and .dev is a Google-operated TLD aimed at developers — it requires HTTPS out of the box. All three are premium but widely recognised in the tech community.
Can I check more than one name at a time?
The domain checker is optimised for a single deep search across 25 TLDs. For comparing multiple candidate names across key platforms and .com, use the Bulk checker — it gives you a side-by-side comparison table.