Why Check Domain Availability?
Before you can launch a website, set up business email, or build your brand online, you need a domain name. But with over 350 million domain names already registered worldwide, finding the right one requires checking whether your desired name is available or already taken.
Checking domain availability is also essential for businesses protecting their brand. You might want to register variations of your company name, check if competitors have claimed similar domains, or verify that a domain you are interested in purchasing is actually active.
Our free domain checker tool lets you instantly look up any domain to see its registration status, creation date, expiry date, and registrar information.
WHOIS vs. RDAP: Two Ways to Check
There are two primary protocols for querying domain registration data: WHOIS and RDAP. Understanding the difference helps you choose the right tool for your needs.
WHOIS (the Traditional Method)
WHOIS has been the standard protocol for looking up domain registration information since the 1980s. When you perform a WHOIS lookup, you query a WHOIS server maintained by the domain registrar or registry. The server returns a plain-text response containing the domain's registration details.
WHOIS responses typically include the domain creation date, expiration date, last updated date, registrar name, name server information, and sometimes the registrant's contact details. However, with modern privacy regulations like GDPR, most registrars now redact personal contact information from WHOIS results.
The main limitation of WHOIS is that it lacks a standardized format. Every registrar can format their WHOIS output differently, making it difficult to parse programmatically. There is no built-in authentication, no standardized error codes, and no consistent data structure.
RDAP (the Modern Replacement)
The Registration Data Access Protocol (RDAP) was developed by the Internet Engineering Task Force (IETF) to replace WHOIS. RDAP addresses nearly all of WHOIS's shortcomings. It returns data in structured JSON format, uses standard HTTP/HTTPS for communication, supports authentication and access control, and provides standardized error responses.
RDAP responses are easier to parse, more reliable, and more consistent across different registrars. ICANN has mandated RDAP support for all accredited registrars, and most top-level domain registries now offer RDAP endpoints.
For most users, the choice between WHOIS and RDAP does not matter because tools like our domain checker handle the protocol details behind the scenes. You simply enter the domain name and get the results.
Understanding Domain Registration Status
When you check a domain, the results reveal its current status. Here is what the common statuses mean.
Registered (Active)
The domain is currently owned by someone. You will see the creation date, expiration date, and registrar information. If you want this domain, you have several options: contact the current owner to negotiate a purchase, wait for it to expire, or choose a different domain name.
Available (Not Registered)
The domain is not currently registered by anyone and can be purchased through any domain registrar. Prices vary based on the top-level domain (TLD). Common TLDs like .com typically cost between $10-15 per year, while premium or new TLDs can cost more.
Pending Delete / Redemption Period
When a domain expires, it does not immediately become available. It enters a grace period (usually 30-45 days) during which the original owner can renew it. After that, it enters a redemption period (another 30 days) where the owner can still reclaim it, usually with a hefty fee. Only after both periods pass does the domain drop and become available for general registration.
Reserved or Restricted
Some domains are reserved by registries for specific purposes or are restricted from general registration. Country-code TLDs like .us or .in may have residency or citizenship requirements.
What to Look for in Domain Check Results
Beyond just available or taken, registration data reveals useful information.
- Creation date -- Tells you how long the domain has been registered. Older domains may have more SEO authority.
- Expiration date -- Shows when the current registration ends. A domain expiring soon might become available if the owner does not renew.
- Registrar -- The company managing the domain registration. This tells you where the current owner purchased the domain.
- Name servers -- Reveals which DNS provider the domain uses, which can indicate the hosting setup. Use our DNS lookup tool to dig deeper into the domain's DNS configuration.
- Domain status codes -- Codes like
clientTransferProhibitedorserverDeleteProhibitedindicate locks placed on the domain to prevent unauthorized changes.
Tips for Choosing a Domain Name
If your first-choice domain is taken, here are strategies for finding a good alternative.
- Try different TLDs -- If
yourbrand.comis taken, consideryourbrand.io,yourbrand.co, oryourbrand.dev. Just be aware that .com still carries the most recognition and trust for most audiences. - Add a relevant modifier -- Adding words like "get", "try", "use", or "hello" before your brand name can yield available .com domains. For example,
getslack.comwas Slack's original domain before acquiringslack.com. - Keep it short and memorable -- Shorter domains are easier to type, remember, and share. Aim for under 15 characters if possible.
- Avoid hyphens and numbers -- They are confusing when spoken aloud and look less professional. People will forget the hyphen and visit the wrong site.
- Check social media availability -- Before committing to a domain, verify that matching usernames are available on major social platforms. Brand consistency across web and social media is valuable.
- Consider local TLDs -- If your business serves a specific country, using the country-code TLD (like .in for India, .co.uk for the UK) can signal local relevance to both users and search engines.
What to Do When Your Desired Domain Is Taken
If the domain you want is registered by someone else, you have several options.
- Use a domain broker -- Services like Sedo or Dan.com specialize in facilitating domain purchases between buyers and sellers.
- Contact the owner directly -- If WHOIS data shows contact information, you can reach out with an offer. Be prepared that premium domains can cost anywhere from a few hundred to millions of dollars.
- Set up expiry monitoring -- If the domain's expiration date is approaching, you can use backordering services that attempt to register the domain the moment it becomes available.
- Choose a different name -- Sometimes the best strategy is finding a unique name that is entirely available. This gives you a clean slate for branding without the complications of purchasing an existing domain.
Start your domain research with our domain checker tool. It provides instant results with registration dates, expiry information, and registrar details. If you are planning a new website and need help beyond just finding a domain, our web development team can build you a professional online presence from the ground up. Book a free consultation to discuss your project.