The best tools to find a domain name fall into five groups: name generators that suggest combinations, availability checkers that confirm whether a name can be registered, registration-data and history tools that show who holds a name and how it was used, trademark databases that tell you whether a name is safe to use, and appraisal tools and marketplaces for names that are already owned. No single tool does all five jobs. Used together, they take you from an idea to a name you can register, defend and build on.
This guide explains what each type of tool does, names well-known examples, and sets out the checks we recommend before you register or buy. We are not affiliated with any of the tools named here, and features change, so treat the examples as starting points rather than endorsements.
Domain Name Generators
A domain name generator takes one or more keywords and returns combinations, synonyms, prefixes and suffixes, usually with an availability flag for each result. Generators are most useful at the start, when you have a concept but not a name.
Well-known examples include NameMesh, which groups suggestions into categories such as common, short and fun; DomainWheel, which suggests names and checks them across several extensions; and Lean Domain Search, which pairs a keyword with a large list of common words. Most registrars also run a suggestion engine in their search box, and those suggestions lean toward extensions the registrar sells. Namechk takes a different approach, checking whether a name is available as a domain and as a username across social platforms, which helps keep a brand consistent.
To get better results, start broad and then narrow. Try synonyms, industry terms and short verbs rather than a single keyword. Say each candidate out loud; a name that is hard to spell when heard will cost you type-in traffic and misdirected email. Generators produce volume, not judgment, so expect to discard most of what they return.
Availability Checkers and Registrar Search
Once you have a shortlist, an availability checker tells you whether each name can be registered now. Every registrar’s search box does this by querying the registry, and our guide to websites to check domain name availability compares the options.
Three cautions apply. First, a name shown as “available” at a premium price is either a registry premium name, which often renews at the premium rate, or an aftermarket listing, which is sold once by an owner. Find out which before you buy. Second, availability can change quickly; once you have decided on a name, register it rather than checking it repeatedly over days. Third, if a name is shown as taken but no site appears, that does not mean it is abandoned. It may be held by an investor, parked, or reserved defensively by a brand.
Registration Data and History Tools
When a name is taken, or when you plan to buy one that has been registered before, you need to know who holds it and how it has been used.
RDAP Lookups
For generic top-level domains, WHOIS (the public registration record for a domain name) has been replaced by RDAP (the Registration Data Access Protocol). ICANN’s notice on the 2013 RAA amendment lists 28 January 2025 as the WHOIS Services Sunset Date for registrar obligations. ICANN’s own lookup tool at lookup.icann.org returns RDAP data for any gTLD name: the registrar, creation and expiration dates, status codes and nameservers. Personal registrant details are usually redacted, so the record will often point you to the registrar or a contact form rather than the owner.
WHOIS History and DNS History
Current data shows only the present. WHOIS history tools show past registration records, which reveal ownership changes, gaps where the name expired, and patterns that suggest a sale or a theft. DNS history tools show where the name has pointed over time; our article on domain name DNS history explains what those records reveal. The Internet Archive’s Wayback Machine adds a third view: what the website actually looked like.
These checks matter because previously used domains carry baggage. When researchers re-registered 201 expired domains, 20.9% had previously hosted real-money gambling and 16.42% were crime-related, and the names still drew 650,737,621 requests in four months from systems that trusted their old identity, according to Squarcina et al., Domains Do Change Their Spots (IEEE S&P 2022). A name with a spam, malware or adult history can carry blocklist entries and search penalties into your business.
Trademark Search Tools
A name that is available to register is not necessarily safe to use. Before you commit, search the USPTO’s trademark search system for US marks and WIPO’s Global Brand Database for international marks, checking both exact matches and confusingly similar names in your industry. A conflict found now costs nothing; a conflict found after launch can cost the domain, under a UDRP (Uniform Domain-Name Dispute-Resolution Policy) complaint or in court, along with the brand built on it. Our guide on how to trademark a domain name covers the other direction: protecting your own name once you have chosen it.
Trademark databases are not the only records worth checking. A search of your state’s business entity registry and a plain web search for the name will show whether another company already trades under it, even without a registered mark. Check the other common extensions as well. If the .com is yours but the .net or the country-code version belongs to a competitor or an unrelated business, customers and email can end up in the wrong place, and you may want to register the closest variants at the same time.
Keyword and Trend Research Tools
Keyword tools such as Google Keyword Planner, Semrush and Ahrefs show how often people search for terms related to your business, and trend tools such as Google Trends and Exploding Topics show whether interest is rising or fading. They are useful for understanding how customers describe what you sell.
Keep expectations realistic. Since Google’s 2012 exact-match domain update, a keyword in the domain name has carried little ranking benefit on its own, and content, links and reputation do the work. A keyword can still help people understand what a site is about at a glance, but a clear, brandable name usually serves a business better over time than a long keyword string with hyphens.
Appraisal Tools
If the name you want is owned and for sale, an appraisal helps you judge whether the asking price is reasonable. Automated tools such as EstiBot and GoDaddy’s domain appraisal estimate value from length, keywords, extension and comparable sales. Sedo offers expert appraisals for a fee. Historical sales databases such as NameBio show what similar names actually sold for, which is often more useful than any estimate.
Treat automated appraisals as rough indicators. They cannot know how much a specific name is worth to a specific buyer. For context on market prices, Sedo and InterNetX reported a median 2019 Sedo sale of $577.22 and an average of $2,284 in their Global Domain Report 2020. Those are 2019 figures, but they illustrate how far typical prices sit below the headline sales.
Marketplaces for Names That Are Already Owned
Marketplaces list names that owners want to sell. Sedo, Afternic, GoDaddy Auctions, NameJet and Flippa are among the best known; NameJet and GoDaddy Auctions also sell expiring names. Look for escrow, so your payment is released only when the name reaches your account, and verify that the seller actually controls the domain. Our guide to how to buy a domain that is taken walks through the process.
Registering the Name You Choose
When you have found the name, register it with a registrar whose account security and renewal pricing you trust. Google Domains no longer exists; Google sold the business to Squarespace in 2023. Our comparison of the top domain name registrars sets out the features that matter, including multi-factor authentication, WHOIS privacy and transfer handling. Register in your own organization’s account, turn on auto-renew, and use an account email that a person reads.
Mistakes We See After the Search Is Over
In the cases we handle, the tools are rarely the problem. The trouble starts afterward. One common mistake is buying a previously owned name without checking its history, then discovering blocklisting or a prior owner who says it was stolen. Another is letting a developer or agency register the chosen name in their own account. A third is treating a trademark search as optional. Each is avoidable with the tools above.
How DNAccess Helps
The best tools to find a domain name will get you to a shortlist; our domain name background check tells you what you would be acquiring. We review a domain’s registration and ownership history, DNS and hosting history, past website content and reputation signals, and report anything that could cause trouble after purchase. More introductory guides are in our Domain Name Basics section.