Why Check Domain Availability?
Before you launch a site, set up business email, or build a brand online, you need a domain. With hundreds of millions of domains already registered, finding a good one means checking whether the name you want is free or already taken.
Checking availability also matters for protecting a brand. You might register variations of your company name, see whether competitors have grabbed similar domains, or confirm that a domain you want to buy is actually in use.
Our free domain checker tool looks up any domain and shows its registration status, creation date, expiry date, and registrar.
WHOIS vs. RDAP: Two Ways to Check
There are two main protocols for querying registration data: WHOIS and RDAP. Knowing the difference helps you pick the right tool.
WHOIS (the Traditional Method)
WHOIS has been the way to look up registration data since the 1980s. You query a WHOIS server run by the registrar or registry, and it returns a plain-text block with the domain's details.
A WHOIS response usually has the creation date, expiry date, last updated date, registrar, name servers, and sometimes the registrant's contact info. Under privacy rules like GDPR, most registrars now hide the personal contact details.
WHOIS has one big weakness: no standard format. Every registrar can lay out its response differently, which makes it painful to parse in code. There is no built-in authentication, no standard error codes, and no consistent structure.
RDAP (the Modern Replacement)
The Registration Data Access Protocol (RDAP) was built by the Internet Engineering Task Force to replace WHOIS, and it fixes most of the problems. It returns structured JSON, runs over standard HTTP and HTTPS, supports authentication and access control, and gives you standard error responses.
RDAP responses are easier to parse and more consistent across registrars. ICANN now requires RDAP support from accredited registrars, and most top-level domain registries offer RDAP endpoints.
For most people the choice does not matter, because a tool like our domain checker handles the protocol details for you. You type the name and read the result.
Understanding Domain Registration Status
When you check a domain, the result tells you where it stands. Here is what the common statuses mean.
Registered (Active)
Someone owns it. You will see the creation date, expiry date, and registrar. If you want it, your options are to contact the owner about buying it, wait for it to expire, or pick a different name.
Available (Not Registered)
No one has it, and you can buy it through any registrar. Price depends on the top-level domain (TLD). A common .com usually runs $10 to $15 a year, while premium or newer TLDs can cost more.
Pending Delete or Redemption Period
An expired domain does not free up right away. It sits in a grace period, usually 30 to 45 days, where the owner can still renew. Then comes a redemption period, another 30 days or so, where they can reclaim it, usually for a stiff fee. Only after both does it drop and become available to everyone.
Reserved or Restricted
Some domains are held back by registries or restricted from open registration. Country-code TLDs like .us or .in can carry residency or citizenship rules.
What to Look for in Domain Check Results
Beyond just taken or free, the registration data is useful on its own.
- Creation date. How long the domain has been registered. Older domains can carry more SEO authority.
- Expiration date. When the current registration ends. A domain expiring soon might open up if the owner lets it lapse.
- Registrar. The company managing the registration, which tells you where the owner bought it.
- Name servers. Which DNS provider the domain uses, a hint at its hosting setup. Use our DNS lookup tool to dig into the full DNS config.
- Domain status codes. Codes like
clientTransferProhibitedorserverDeleteProhibitedshow locks placed on the domain to prevent unauthorized changes.
Tips for Choosing a Domain Name
If your first choice is taken, here are ways to find a good alternative.
- Try different TLDs. If
yourbrand.comis gone, look atyourbrand.io,yourbrand.co, oryourbrand.dev. Just remember .com still carries the most recognition for most audiences. - Add a relevant modifier. Words like "get", "try", "use", or "hello" in front of your brand can free up a .com. Slack ran on
getslack.combefore it gotslack.com. - Keep it short and memorable. Shorter names are easier to type, remember, and say out loud. Aim for under 15 characters if you can.
- Avoid hyphens and numbers. They confuse people when spoken and look less serious. People forget the hyphen and land on the wrong site.
- Check social media availability. Before you commit, make sure the matching usernames are open on the major platforms. Consistency across web and social is worth something.
- Consider a local TLD. If you serve one country, its code TLD (.in for India, .co.uk for the UK) signals local relevance to users and search engines.
What to Do When Your Desired Domain Is Taken
If someone already holds it, you have a few moves.
- Use a domain broker. Sedo and Dan.com handle purchases between buyers and sellers.
- Contact the owner directly. If WHOIS shows contact details, reach out with an offer. Be ready for premium domains to run from a few hundred dollars to millions.
- Set up expiry monitoring. If the domain is close to expiring, a backordering service can try to register it the moment it drops.
- Choose a different name. Often the cleaner move is a unique name that is fully open, which gives you a fresh start for branding without the cost and hassle of buying an existing one.
Start your research with our domain checker tool. It gives instant results with registration dates, expiry, and registrar details. If you are planning a new site and need more than a domain, our web development team can build the whole thing from the ground up. Book a free consultation to talk it through.