How to Check If a Domain Name Is Available
Learn how to check whether a domain name is available to register, what to do if it's taken, and how WHOIS and DNS help you research a domain.
By the ToolsHub team · Updated August 20, 2026
Before you build a site or brand, you need a domain name that's actually free to register. Checking availability takes seconds, and knowing what to do when a name is taken saves a lot of time.
Checking availability
A domain is either registered by someone or available to buy. The quickest way to find out is our Domain Availability Checker — type the name and it tells you immediately whether it's taken or free, so you can move on to registering it or trying another.
If the domain is already taken
Plenty of good names are registered but unused. To see who holds one and when it expires, run a WHOIS Lookup or the more structured RDAP Lookup. That tells you the registrar and, unless the owner uses privacy protection, the registration and expiry dates — useful if you want to make an offer or wait for it to lapse.
Tips for choosing a name
- Keep it short and easy to spell; avoid hyphens and numbers where you can.
- Check the matching social handles are free too, not just the domain.
- Consider a newer extension (.dev, .io, .app) if the .com is gone — many are widely accepted.
After you register
Once the domain is yours, you point its DNS records at your hosting. If a site or email isn't working afterwards, check the records with our DNS Lookup tool — see Understanding DNS Records for what each record type does.
Frequently asked questions
- How do I check if a domain name is available?
- Enter the domain in a domain availability checker — if it isn't registered, it's free to buy. Our Domain Availability Checker tells you instantly whether a name is taken or available.
- What does it mean if a domain is taken?
- Someone has already registered it. You can look up who, and when it expires, with a WHOIS lookup, and either pick a different name or contact the owner.
- How do I find who owns a domain?
- Use a WHOIS or RDAP lookup, which returns the registrar and (where not privacy-protected) registration and expiry dates for a registered domain.
- Can I register a domain that recently expired?
- Sometimes. Expired domains go through a grace and redemption period before being released. A WHOIS lookup shows the expiry date so you can judge the timing.