The short answer: a bulk domain checker asks the registry about each name on your list and tells you which are free to register. This one checks up to 100 name and extension pairs per run, live over RDAP, with no account and no registrar in the middle.
What the results mean
| Result | What it means | What to do |
|---|---|---|
| Available | The registry has no registration for this name. | Register it at any registrar. Check the price first, since some names are premium. |
| Taken | Someone has registered it. It may be in use, parked or expiring. | See who owns it with the domain owner lookup, or when it could free up with the expiry checker. |
| Couldn't check | The registry didn't answer, is limiting lookups, or has no RDAP service. | Try again in a minute, or check that one at a registrar. |
Tips for checking a long list
- Start with .com only. One extension per name gives you the most names per run. Add others for the names you like.
- Clean the list first. Spaces and symbols are removed, so "Bright Lane" becomes brightlane. Use a hyphen if you want one.
- Don't sit on good finds. An available name can be registered by someone else at any moment.
- Keep the shortlist somewhere it gets rechecked. A spreadsheet of names goes stale quickly.
If the name you wanted is taken, try the taken domain alternatives finder. For a way to keep and choose between names, read a simple system for capturing and choosing domain names.
FAQ
How many domains can I check at once?
Up to 100 checks per run, for example 33 names in three extensions or 100 names in .com. Each name is checked live with its registry, so we keep runs small enough that registries don't block us.
Do I need an account?
No. Paste your names, pick extensions and check. Nothing is saved on our side, and you can download the results as a CSV.
How accurate is a bulk availability check?
Each answer comes straight from the registry over RDAP, so 'taken' and 'available' reflect the registry's records at that moment. A few available names are premium or reserved and cost more, so confirm the price at your registrar before you buy.
Can I paste full domains instead of names?
Yes. If a line already has an extension, like acme.io, it's checked as is. Lines without one are checked in every extension you pick.
Is it safe to search domains in bulk?
This tool asks the registry directly and doesn't share your list with registrars or marketplaces. Our post on what 'available' really means covers how searches work and why some people worry about front running.