This tool was designed to perform quick availability and DNS server checks on up to 100,000 domain names at a time.

Since registries do not allow constant checking of such large lists, we perform all checks via a DNS method. This means that domain names which have no DNS records (< 0.5% of all registered domains) will show up as "available" even though they are registered. It takes approximately 3 minutes to check 100k domains.

Need to check multiple extensions at once? If you need to check availability for up to 8 of the world's most common extensions (global top level domains) bulk availability checker tool.

Paste in one or more domains in any format from CSV to text to HTML. Our parser will automatically parse out and remove duplicate domains from any input. You can also drag-and-drop files into the input box. Click here to view a list of supported extensions.

Your Guest account allows a maximum of 5 items to be submitted at a time.