Domain Availability Checker
Enter a domain name to instantly check its availability across .com, .net, and .org extensions.
Enter a domain name above to check availability
.com, .net, .org checked via RDAP. Other TLDs require an external registrar check.
How to use Domain Availability Checker
The Domain Availability tool checks whether a domain name is unregistered and available to buy, or already taken, by combining a fast DNS check with a WHOIS lookup. When you are brainstorming a name for a project, business or campaign, you need a quick way to see which candidates are free before heading to a registrar. This tool gives an immediate available-or-taken answer and, for registered names, shows basic WHOIS details so you can gauge whether a taken domain might be expiring soon or available to purchase from its current owner.
- Enter the domain name idea you want to check.
- Click Check to test registration via DNS and WHOIS.
- See whether the name is available or already registered.
- For taken names, review the expiry date in case it is lapsing soon.
- Head to a registrar to register an available name you like.
Your data never leaves your device — 100% private processing.
How availability is determined
The quickest signal is whether the domain has any DNS records or a WHOIS entry: a name with neither is almost certainly unregistered. However, a registered domain can exist without a website, so a DNS check alone can mislead, which is why pairing it with WHOIS gives a reliable answer. Some premium or reserved names also appear free in basic checks but carry a special price at the registry. Treating this tool’s result as a strong indicator to confirm at checkout is the right approach.
Tips for finding a good available name
Short, memorable .com names are largely taken, so successful searches often combine a distinctive brandable word with a relevant term, or use a newer top-level domain such as .io, .app or .dev. Avoid hyphens and numbers, which hurt recall and are easy to mistype when spoken aloud. If your ideal .com is registered but unused, a WHOIS lookup may reveal an expiry date worth watching or a contact to negotiate with. Checking several variations quickly is the fastest path to a name that is both available and strong.
| TLD | Common use |
|---|---|
| .com | Default for business; most competitive |
| .io | Tech and startups |
| .app / .dev | Apps and developer projects |
| .co | Short alternative to .com |
Glossary
- Domain availability
- Whether a domain name is unregistered and free to buy.
- Registrar
- A company accredited to sell and manage domain registrations.
- TLD
- Top-level domain — the suffix such as .com, .io or .org.
- Premium domain
- A name the registry prices above the standard rate.
- Backorder
- A service that attempts to register a domain the moment it expires.
Related reading
Frequently Asked Questions
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Why use Domain Availability Checker?
- Real-time DNS lookups using live resolver queries
- Supports IPv4 and IPv6 addresses
- No software to install — runs entirely in the browser
- Results include TTL values and record priority
Common use cases
- Verify DNS propagation after updating nameservers
- Check MX records when troubleshooting email delivery
- Look up SPF/DKIM/DMARC records for email security audits
- Test whether a SSL certificate is valid and up to date
- Find the IP address behind a domain name
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