Domain Name Checker — Availability, Price and History

Instantly check if a website name is taken across .com, .net, .org, .io, .co, .dev, .app, and .ai at once. This free domain availability check requires no signup and no purchase — just enter a name and see which extensions are available right now, powered by live RDAP and WHOIS data.

Enter a domain name or brand and we'll check availability across 8 popular extensions instantly.

"Available" Is the First Check, Not the Only One

A domain showing as unregistered means nobody currently holds it. That is genuinely useful and it is a narrower statement than most people read it as. Four separate things can stand between an available domain and a domain you can actually use.

CheckWhat it establishesWhere it fails
RegistrationNobody currently owns itThis tool answers it directly
PriceWhat it costs to register and to keepPremium names and renewal pricing are set per domain
TrademarkWhether someone can force you off itAvailability says nothing about anyone's rights to the name
HistoryWhat the name was used for previouslyA dropped domain can carry penalties and blocklist entries

The last two are the ones that cost people money after the purchase rather than before it, and both are checkable in a few minutes.

The Four States a Domain Can Be In

Results are usually presented as available or taken. There are effectively four situations, and the middle two are commonly mistaken for one of the outer ones.

  • Unregistered. Free to register at the standard price for that extension, first come first served.
  • Registered and in use. Someone owns it and is using it. Buying it means approaching the owner, and the price is whatever they will accept.
  • Registered and parked. Owned but showing only ads or a for-sale page. Frequently held by investors, and often negotiable — though the asking price reflects that the holder is in the business of selling names.
  • Premium or reserved. Unregistered but priced far above the standard rate by the registry, or held back from general registration entirely. It shows as available and costs a multiple of what you expect.

The premium case surprises people at checkout. Short names, common words and obviously commercial terms are frequently classified this way, and the elevated price sometimes applies to every year rather than only the first.

Renewal Pricing Is Where the Cost Actually Lives

Registrars compete on first-year pricing because it is the number shown in advertising. A domain is a recurring cost, so the renewal price is the one that matters over any realistic period.

A first year discounted heavily against a standard renewal can look cheap and cost several times more over five years than a registrar charging a flat rate throughout. Before registering anywhere, check three prices rather than one: the first year, the renewal, and the transfer-out fee if there is one.

Two related details are worth knowing in advance. A newly registered domain generally cannot be transferred to another registrar for a set initial period, so switching because you found a cheaper renewal is not immediate. And a lapsed domain does not become available the day it expires — there is a grace period, then a redemption window with a substantial recovery fee, before it returns to general availability. Losing a domain by forgetting to renew is expensive to undo.

Availability Is Not Permission

Registration and trademark are separate systems that do not consult each other. A registrar will sell you a domain matching an existing brand without any check, and the trademark holder can subsequently have it transferred away through a dispute process — losing you the name, the registration fee, and whatever you built on it.

Before committing to a name for anything commercial, spend a few minutes on the obvious checks: search your national and regional trademark registers for the term, search the name plainly to see who is already trading under it, and consider whether a reasonable person could confuse your use with an established business. None of that is legal advice, and it catches the clear-cut problems.

The rule of thumb worth applying is that the more distinctive and invented your name, the safer it is. Descriptive names are harder to protect and easier to collide with.

Check What the Name Was Before

An unregistered domain has not necessarily always been unregistered. Names get abandoned, and some are abandoned because they were used for spam, malware distribution or link schemes. Registering one means inheriting whatever reputation it accumulated.

The symptoms are unpleasant and not obvious at purchase: mail from the domain lands in spam because the name appears on blocklists, or the site struggles to rank because of a search penalty that has nothing to do with you. Two checks before buying are worth the time — look the name up in a web archive to see what it hosted previously, and search for it to see whether anything unwelcome surfaces. A name with a long gap and no history is the clean case.

Extensions: What Matters and What Does Not

The extension carries less technical weight than people assume and more social weight.

ExtensionReads asWorth knowing
.comThe default for anything commercialPeople type it by reflex, which is its real advantage
.orgNon-profit, community, open projectOpen to anyone, despite the association
.netTechnical, or a fallback when .com is goneNeutral; rarely a first choice today
.io, .dev, .app, .aiTechnology and startupsHigher renewal prices; some enforce security requirements
Country codesA specific national marketSome require local presence; strong signal if you serve one country

Search engines do not rank a .com above a .net for being a .com. What the extension changes is human behaviour — how memorable the address is, whether people type the right one from memory, and how the brand reads when spoken aloud. If your audience will assume .com and you own something else, expect to lose some traffic to the wrong address permanently.

After You Register

  • Turn on auto-renew and check the card on file. The most common way to lose a domain is an expired payment method attached to an address nobody reads.
  • Keep the contact email off the domain itself. If the domain lapses, notices sent to an address on that domain will not reach you.
  • Enable registrar lock and two-factor authentication. Domain theft happens through registrar account access, not through the DNS.
  • Leave privacy protection on unless you have a reason to publish your details. It is standard now and keeps personal information out of public records.
  • Point the records where they need to go. Our DNS lookup tool confirms what a domain is currently publishing, and the email validator checks whether a domain is configured to receive mail.

Domain Registration Questions

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