What is a bulk domain availability checker?
A bulk domain availability checker asks the registries that manage each top-level domain whether a name has already been registered, across many names in a single pass. Instead of guessing or typing each candidate into a registrar checkout, you paste your list and get a live Available, Taken or Unknown verdict for every domain at once. Because the answers come from authoritative registry data rather than a registrar's marketing page, you can shortlist names, compare them side by side and register before someone else does.
Check multiple domains at once
Paste up to 50 names, one per line, and each one is checked individually against its registry. You always know which name is free, which is taken and which needs a second look, ideal for brainstorming sessions where you want to check domain availability in bulk.
More than a bulk domain search tool
Beyond the free or taken verdict, results group into an instant summary so you can see at a glance how many names are open. Use it as a bulk domain lookup tool to sweep a shortlist of name ideas, extensions and variations, then run a mass domain availability check whenever the list changes.
Why check before you buy
Domains are cheap to register but expensive to rebrand around. Running a mass domain availability check first protects you from building a product or printing materials around a name you cannot own, and lets you compare several candidates before committing.
Frequently asked questions
How many domains can I check in bulk?
Up to 50 domains per check, one per line. Each name is checked individually so you always know which one is free.
Why did a domain show as Unknown?
Some top-level domains and privacy-protected registrations do not expose a clear availability answer. Retry in a moment, or use the WHOIS tool for more detail.
Is an available domain guaranteed to stay available?
No. Registrars reserve names constantly. Treat availability as a snapshot in time and register promptly once you decide.