Domain Availability Checker - Free Bulk Check

This domain availability checker lets you test up to 20 domain names in one run. Paste one full domain per line, start the check, and see which names already have a registry record, which could not be verified, and which are invalid. It is free, needs no sign-in, and links each registered domain to its WHOIS record.

What Is Domain Availability?

Domain availability describes whether anyone can still register a specific domain name. A name is available when no one holds a current registration for that exact combination of name and extension, and the registry allows it to be sold.

Every extension counts separately. If brightpath.com is registered, brightpath.net and brightpath.org can still be free. Some extensions also reserve certain names or sell them at premium prices, so "unregistered" does not always mean "cheap to register."

Availability also changes over time. A domain that expires usually passes through a grace period and a redemption period before it is released, so a name that looks taken today may open up later. That is why checking a whole shortlist at once, and re-checking it later, is a useful habit.

How to Use the Domain Availability Checker

You can run a full check in under a minute. Type or paste your names into the Domains box, then submit the form.

1. Open the Domains box and enter one domain per line, including the extension, such as example.com, mydomain.org or newsite.net.
2. Watch the counter beside the box. It shows how many lines you have entered out of the 20 allowed, such as 3 / 20.
3. Submit the form. The button changes to a "Checking..." state while the lookups run.
4. Read the summary at the top of the results. It shows how many domains were checked, plus counts for Available, Taken and Unknown.
5. Scan the table. Each row shows the number, your domain, a status message, a WHOIS link (when a record exists) and a Register column.
6. Click WHOIS on any registered domain to open its record in a new tab, or go back and run a fresh list.

You can paste names with http:// or www. in front. The checker strips those and tests the bare domain.

Worked Example: Checking a Shortlist of Three Names

Say you are launching a coffee subscription and you have three ideas. You paste these into the Domains box:

• example.com
• northwindcoffee.com
• northwind-coffee.net

The counter reads 3 / 20 and the summary says 3 Domains Checked. For illustration, suppose the table returns these rows:

• example.com: "Registered (registry record found)" with a WHOIS link. This name is taken. You can open the record to see the registrar and dates.
• northwindcoffee.com: "Registration not found; availability unverified. Verify with a registrar." No registry record turned up, so this is a promising lead.
• northwind-coffee.net: the same message, so it is a second lead.

The next step is to take the two promising names to a registrar's search box and confirm they can be bought. Only then should you commit to the brand, the logo and the social handles.

How Do You Read the Results?

Each row carries one of three outcomes, and each calls for a different action. The summary counts at the top add them up so you can see the shape of your list at a glance.

You may also see "Time limit reached" on rows near the end of a long list. That means the check ran out of time before reaching them. Run those names again in a smaller batch.

What the Unknown Count Tells You

The Unknown count groups every row that is not confirmed as registered. A high Unknown count on a good list is not a failure. It usually means many of your names have no registry record, which is the outcome you are hoping for. Treat those rows as candidates, not guarantees.

Using the WHOIS Link

For taken domains, the WHOIS page shows the registration record in plain text. Look at the creation and expiry dates. If a domain you want expires soon, you can watch it with the bulk domain expiry checker, and the domain age checker shows how old a registered name really is.

Who Benefits From a Bulk Domain Availability Check?

Anyone comparing several name ideas gains time by checking them together instead of typing each into a registrar one at a time. These are the most common situations:

• Founders and small business owners narrowing a brand shortlist before paying for a logo or filing a business name.
• SEO professionals and affiliates screening batches of keyword-based names for new niche sites. Pair it with the keyword domain finder to generate the list first.
• Agencies checking name options for several clients in one pass.
• Domain investors sorting a long brainstorm into taken names and open leads.
• Brand managers checking variations of an existing name across extensions, such as the .com, .net and .org versions.

If you are still hunting for ideas, the business name generator can supply a starting batch that you then paste straight into the Domains box.

Best Practices, Common Mistakes and Troubleshooting

Most odd results come from how the names were typed. These checks solve nearly all of them.

Always Include the Extension

The checker tests exactly what you enter. A line that is just mybrand has no dot, so it comes back as "Invalid domain." Type mybrand.com, then add mybrand.net and mybrand.io on separate lines if you want to compare extensions. The domain extension compare page helps you decide which ones are worth testing.

Keep Names Short and Clean

Letters, numbers and hyphens are valid in a domain name. Spaces, underscores, commas and symbols are not. If one row says "Invalid domain," look for a stray space, a trailing comma or an underscore.

Stay Within 20 Lines

The limit is 20 domains per check. If you paste more, you get a message asking you to enter up to 20 and none of the rows are processed. Split a long brainstorm into batches of 20 and run them one after another.

Do Not Treat "Not Found" as a Purchase Confirmation

The message "availability unverified" is deliberate. A missing record is a strong sign a name is open, but registries can reserve names, price some as premium, or restrict who may register them. Always finish at a registrar's checkout page.

Re-Check Before You Buy

Registrations happen constantly. A name that looked open yesterday may be gone today, so run a final check right before you purchase.

Avoid Near-Miss Names Too

Before settling on a name, think about misspellings that could send visitors to someone else. The domain typo generator lists common variations you may want to register or at least check.

Limits and Accuracy Notes

This checker is built to confirm which domains are registered and to flag the rest as unverified. It does not show registration prices, and it does not buy domains for you. The Register column displays a link only when one is available, and otherwise shows a dash.

Some extensions may not return registry information, which can also leave a row marked as unverified. A result is a snapshot of the moment you ran the check, not a reservation. For the most reliable answer on a name you are about to pay for, treat this page as a fast first filter and a registrar as the final confirmation.

Ready to test your shortlist? Enter your names in the Domains box above, run the check, and move only the unregistered leads forward. You can find related tools for names, ages and extensions in the domain tools category.