Business Name Search & Availability Checker
You have a business name in mind — now you need to know if it is actually available. 'Available' is not a single yes-or-no answer; it is a four-layer question covering domain registries, trademark databases, state business filings, and social media platforms. Namilio's business name search handles the domain layer instantly, checking availability across 27+ TLDs in real time, while this guide walks you through the complete availability picture so you invest in a name you can actually own.
How to Check Business Name Availability in Seconds
Paste the name you already have
Already settled on a business name? Drop it into the Check Names tool and Namilio runs a live web-name availability search for you instantly.
See domain availability across 27+ TLDs
Namilio checks .com, .net, .io, .co, .ai, .shop and 20+ more in real time, so you know which extensions for your business name are still open.
Search alternatives if it's taken
If the domain for your name is gone, generate brandable variations on the spot and re-check availability without leaving the page.
Available Business Name Ideas to Search Right Now
These are sample names. Generate your own custom business name search names tailored to your keywords.
How to Check If a Business Name Is Available
A business name search is not a single lookup — it is a systematic four-layer verification process, and skipping any layer creates a specific, quantifiable risk. The four layers are: domain availability, trademark clearance, state or national business registry, and social media handle availability. Each layer operates independently — a name can be available on one and blocked on another — so you must check all four before investing in brand assets. The entire process takes 30 to 60 minutes when done properly, and it can save you tens of thousands of dollars in rebranding costs.
Layer one is domain availability — the fastest and easiest check. Type your candidate name into Namilio and scan the results across 27+ TLDs. A name with no available domains on any common extension is an immediate disqualification signal. If .com is taken but the name is available on .co, .io, or .app, that may be acceptable depending on your business type. If the .com is parked by a speculator, you can explore acquisition — prices range from a few hundred to six figures depending on the name's perceived market value.
Layer two is trademark clearance — the most consequential check. Domain ownership and trademark rights are entirely independent legal systems. You can own a domain and still face a trademark infringement claim that forces you to stop using the name entirely. Search the USPTO TESS database (in the US) for your candidate name in your product or service class. Look for live registrations that could create likelihood of confusion. Similar-sounding names in adjacent categories are a gray area worth discussing with a trademark attorney if the business is a significant investment.
Layers three and four — state business registry and social media — complete the picture. Your state's Secretary of State website has a free searchable database of registered entities. Some states reject names that are merely similar to existing registrations, not just identical ones. For social media, check every platform where your target audience is active. A name that is available across all four layers is rare and valuable — the moment you find one, act quickly. Domain and social handle availability can change within hours.
Ways to Search a Business Name Before You Commit
Exact Match Search
Search your exact proposed business name first across all four layers. This catches the most direct conflicts before you invest any further evaluation effort. An exact match conflict on any single layer is a strong signal to explore alternatives.
Variation and Modifier Search
If your exact name is blocked on one layer, test common variations — plurals, word order swaps, added modifiers like 'Co', 'Group', or 'Studio'. A single thoughtful variation can open availability across all four layers while preserving the core name identity you prefer.
Phonetic Similarity Search
Trademark law covers confusingly similar names, not just exact text matches. Search for names that sound like yours when spoken aloud. 'Colour' and 'Color' in the same product category can trigger a legal conflict. This search protects you from the most expensive type of name conflict.
Category-Scoped Trademark Search
Trademark availability is category-specific — 'Apple' the record label and 'Apple' the technology company coexisted for decades. Scope your USPTO search to your specific International Class to get an accurate picture of whether your name is clear in your specific market.
Your Business Name Availability Search, Step by Step
Check domain availability across 27+ TLDs
Enter your business name into Namilio's domain checker. This takes under 30 seconds and immediately reveals whether your name has viable online real estate. A name with no available domains on any common extension is a strong signal to explore alternatives immediately rather than investing in further checks.
Search the USPTO trademark database
Navigate to the USPTO TESS database and search your candidate name. Filter to live registrations in your International Class. Look for exact matches and phonetically similar marks. This 10-minute check can save thousands in legal fees and prevents the devastating scenario of a cease-and-desist letter after you have already invested in brand assets.
Search your state's business entity registry
Visit your Secretary of State website and search the business entity database. Most states have a free search tool. Check for exact matches and similar names in your industry. Some states apply stricter distinguishability standards than others — a name that would be approved in one state may be rejected in another.
Check social media handle availability
Search Instagram, X, LinkedIn, TikTok, Facebook, and YouTube for your candidate name. Consistent handles across platforms build brand cohesion. A name available in three of four layers but taken on every social platform leaves you with a fragmented brand presence that undermines all your other investments.
Document your search results with dates
Screenshot or export your search results from each layer with timestamps. If a naming conflict arises in the future, documented evidence of your availability research demonstrates good-faith adoption. This five-minute step creates a legal paper trail that can be valuable evidence in a dispute.
Ready to find the perfect business name search name? Namilio generates hundreds of options in seconds.
Try the Business Name Search Name GeneratorBusiness Name Search Mistakes That Cost You the .com
Checking only one layer and assuming you are clear
The most common and most expensive mistake: a founder checks domain availability, finds a clean .com, and assumes the name is safe. Months later, a trademark holder sends a cease-and-desist letter. Each of the four layers operates independently. A clear result on one is not evidence of clearance on any other.
Confusing state registration with trademark protection
A state business registration does not protect your name in other states or at the federal level. If you operate across state lines or sell online, only a federal trademark provides broad protection. Many small business owners believe their state filing gives them nationwide rights — it does not.
Ignoring phonetically similar existing names
Trademark law covers confusingly similar names, not just identical text strings. A name that looks different in writing but sounds the same when spoken can trigger a trademark infringement claim. 'ClearPath' and 'KlearPath' in the same category would likely be considered confusingly similar.
Completing the search but delaying registration
Thorough availability research is worthless if you wait weeks to act on it. Domain availability is volatile — names are registered by other users and automated bots constantly. State business names can be claimed by anyone. The day you complete your search should be the day you begin registration.
Tips for a Faster, Cleaner Business Name Availability Search
Start with the domain check because it is the fastest filter
Namilio checks 27+ TLDs in seconds. Starting with the domain layer eliminates obviously unavailable names before you spend 10 minutes on a trademark search or state registry check. Work from the fastest check to the slowest to maximize the efficiency of your availability process.
Complete your search before commissioning any design
Never commission a logo, brand identity, or business cards before completing all four layers of your business name search. Design work creates emotional attachment to a name that may not be available, making it psychologically harder to pivot when a conflict surfaces.
Check international databases if you have global ambitions
If your business has any possibility of international operation, search the EUIPO (Europe) and WIPO (worldwide) trademark databases in addition to the USPTO. A name clear in the US can be a registered trademark in Europe, Canada, or Asia — and international trademark conflicts can be even more expensive to resolve.
Use your documented search as legal evidence
Keep dated screenshots of your search results from every layer. In a future naming dispute, documented evidence that you conducted a thorough search in good faith before adopting the name is valuable legal protection — and it costs you nothing beyond five minutes of screenshotting.
Consider professional clearance for high-stakes names
For businesses with significant investment — funded startups, franchise concepts, national brands — a trademark attorney's comprehensive clearance search is worth the cost. They access databases and analysis tools that self-service searches do not cover, and they can assess risk across multiple jurisdictions and product classes.
Further Reading
How to Check If a Business Name Is Available (5-Step Guide)
Before you print business cards or launch a website, you need to confirm your business name is actually available. This guide walks you through every check you need to run.
How to Choose a Domain Name: 10 Rules for the Perfect URL
Your domain name is your digital address — it shapes how customers find you, trust you, and remember you. Follow these 10 rules to choose a domain name that works.
How to Trademark a Business Name: Complete Guide for 2026
Trademarking your business name protects the brand you have built and stops competitors from copying it. This guide walks you through every step of the process in plain language.
Business Name Search & Availability: Common Questions
How do I check if a business name is available for free?
Use Namilio's free business name search to check domain availability instantly, with no signup required. Paste a name you already have into Check Names, or generate new ones, and Namilio scans 27+ TLDs live. For the legal layers, the USPTO trademark database and your state Secretary of State search are also free to use.
How do I check business name availability?
Type or paste your business name into Namilio and it checks domain availability across 27+ TLDs in real time. That covers the web-name layer. To confirm the name is fully clear, also search the USPTO for federal trademarks and your state's Secretary of State for registered entities, since those are separate databases Namilio does not check.
Is there a free company name availability checker?
Yes. Namilio is a free company name availability checker for domains. Enter any name and it instantly shows whether the .com, .io, .co and 24+ other extensions are open. The core checker is free and needs no account. For trademark and state-registry status you'd use USPTO and your Secretary of State separately.
How can I look up business name availability without signing up?
Namilio's business name search runs entirely without an account. Open the generator or the Check Names tool, enter your name, and see live domain availability across 27+ TLDs. No email, no signup, no paywall for the core availability check.
What's the difference between a business name search and a domain availability search?
A domain availability search, which is what Namilio does, tells you whether the web address for your name is free to register. A full business name search also includes federal trademarks (USPTO) and state business registries (Secretary of State), which are separate legal systems. A name can be open as a domain but registered as a trademark, so check all three.
Can I check a business name I already have, not just generate new ones?
Yes. The Check Names feature is built exactly for that. Paste names you've already shortlisted and Namilio runs a live web name availability search across 27+ TLDs for each one, so you can confirm the domain before you build a brand around it.
How do I check if a business name is available nationally?
National availability has separate layers. Domain availability is global by nature, and Namilio checks it across 27+ TLDs instantly. Federal trademark coverage comes from the USPTO database. State registration is per-state through each Secretary of State, with no single national registry. Namilio owns the domain layer; pair it with USPTO and your state for the legal picture.
Does a free business name search check trademarks too?
No. Namilio checks domain availability, not trademarks or state registrations. Those are separate legal databases. Use Namilio to instantly confirm the web name is open, then search the USPTO for trademarks and your state Secretary of State for registered entities. All three are free, but they're distinct checks.
What does it mean when a domain shows as taken or premium in my search?
Taken means the domain is already registered and unavailable to claim. Premium or for-sale means it's registered but the owner has listed it at a set price you could potentially buy. If your preferred name shows taken on .com, Namilio surfaces available alternatives and other TLDs so you can find a web name you can actually own.
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