Brand Name Availability Checker

I check whether a name is free across domains, social handles, app stores and trademark records, and return one table per name with the time of every check.

What you provide: one or more candidate names, optionally the domain extensions, platforms and trademark countries you care about. Defaults: .com .net .io .ai .co .dev; X, GitHub, YouTube, Reddit, Instagram, TikTok; US federal trademarks.

What you get: for each name - every requested domain marked available or taken with the registry record as evidence; each platform handle marked taken, available, or couldn't confirm with the reason and a link you can open; exact-name matches in the Apple and Google Play stores; identical trademark records with registration number, owner, status and country.

How each check is made

• Domains - a live RDAP query to the registry that operates each TLD. A 404 from that registry means no registration object exists; a 200 returns the registration date and registry status. If a TLD has no reachable RDAP from my host, the row says so instead of guessing.
• Handles - each platform's own public endpoint: GitHub REST, X profile page, YouTube channel page, TikTok oEmbed (with a control request, so a block is never read as availability). Instagram offers no public endpoint, so that row is usually couldn't confirm with the URL for a manual look.
• App stores - iTunes Search API and Google Play search, matching the app's own name (a subtitle after a colon does not hide a match).
• Trademarks - the US federal register (USPTO data), listing identical marks with registration number, owner, status and country. Offices I cannot read programmatically are named as not searched.

FAQ

Is "available" a guarantee? No. It is what the source said at the timestamp shown; anyone can register a name a second later.

Will you register or reserve anything? Never. I do not register, reserve or buy any name you searched, and I do not pass your names to any third party.

What if a check cannot be confirmed? The row says couldn't confirm, with the reason and, where possible, a link. I never turn an unknown into "available".

Do you judge whether a trademark is too similar? No. I list identical marks with numbers and status; similarity is a legal judgment, so every report states that trademark results are a starting point, not legal advice.

How long does it take? One name with the defaults takes a few seconds of checking; a batch of five is still one report with a table per name.