Bulk Domain Availability Checker
Paste or add multiple names, select the domain extensions you want, and check every combination at once. No signup required.
- Add multiple names
- Select extensions
- Check all combinations
- No signup required
Domain checking guide
Check several domain ideas in one organized search
A bulk domain availability checker takes a list of names and a set of extensions, then checks every combination. Instead of testing northstar.com, northstar.ai, and northstar.io one at a time, you can add “northstar” once and select all three extensions. Add more name ideas and the same selections apply to each one. This makes it easier to compare a shortlist while keeping the naming decision separate from AI name generation. The results are grouped in one view, where you can filter by extension, show available options, and save promising domains while you compare them. That shared view is the main advantage over opening a separate search for every possibility: it keeps the same criteria across the entire shortlist and makes gaps easier to notice.
Who the bulk checker is for
Use this page when you already have possible company, product, campaign, or project names. It is useful for founders comparing a shortlist, agencies checking options for a client, and teams deciding whether a name works across several extensions. If you still need ideas, start with the AI business name generator to create brandable names and check matching domains.
How to check multiple names
- Enter a name and select Add; repeat for each idea.
- Select the extensions relevant to your audience.
- Review the estimated number of combinations.
- Select Check Availability and compare the results.
Inputs are normalized to lowercase domain labels. Spaces and unsupported characters are removed, so review the added name chips before starting the search.
Choose extensions that fit the brand
The built-in extension list is .com, .net, .org, .io, .co, .ai, .biz, .info, .me, .us, .uk, .de, .fr, .it, .br, .in, and .pk. Six common options are selected initially, and you can select all, clear the selection, or add a custom extension. Custom entries let you attempt another suffix, but they do not guarantee that its registry provides compatible data. Checking several relevant extensions can reveal which name offers the clearest overall brand choice. It can also help you spot conflicts before committing to a name whose preferred .com is already registered. Choose extensions intentionally: a country extension may suit a local audience, while .org may communicate a different expectation than .com or a technology-oriented suffix. The checker compares availability; it does not decide which extension is appropriate for your organization.
Available
DNS did not indicate an active domain and the fallback RDAP service returned a not-found response. Confirm with a registrar before buying.
Taken / unavailable
The checker found name servers, an address record, or an RDAP domain record that indicates the domain is already in use or registered.
Error / unknown
A lookup failed or returned an unexpected response. Treat this as inconclusive and check the domain directly with a registrar.
Understand the limits before deciding
Results combine DNS checks with an RDAP fallback. A domain can be registered without the DNS records this tool tests, RDAP services can be unavailable, and status may change between your search and checkout. The tool does not quote registration or renewal prices, reserve a name, assess trademark risk, or guarantee that a registrar will sell it. Large searches create one lookup per name-and-extension combination and may take longer. Use the results to narrow your shortlist, not as a substitute for final registrar and legal checks.
After you find an available domain
Open a registrar and confirm that the domain remains available, including its first-year price, renewal price, and any premium fee. Check whether the wording conflicts with existing brands or trademarks, and consider how it sounds when spoken aloud. If the name still works, register it promptly because this checker does not hold domains. You may also secure a small set of relevant extensions to protect a clear launch plan, but avoid buying unrelated variations that your audience will not use.
FAQ
Bulk domain checker questions
Can I check multiple domain names at once?+
Yes. Add several names, choose one or more extensions, and the tool checks every name-and-extension combination in the same search.
Can I check .com, .ai and .io domains together?+
Yes. .com, .ai, and .io are built-in choices and can be selected together. You can combine them with other listed or custom extensions.
How accurate are the domain availability results?+
The checker uses DNS lookups followed by an RDAP request when DNS has no registration signal. Results are a useful screening step, but availability can change and should be confirmed with a registrar before purchase.
How many domains can I check in one search?+
The interface does not publish a fixed maximum. Each added name is checked against every selected extension, so a larger combination creates more requests and may take longer or return unknown results.
What should I do after finding an available domain?+
Confirm the current status and price with a registrar, review the name for trademark conflicts, and register it promptly if it still fits your brand and budget.