How to Check if a Username Is Taken on Every Site (Step by Step)

You have a name in mind for a new project, a channel, or a fresh online identity. Before you print it on anything, you want to know one thing: is that username already taken? Checking one site at a time works for two or three platforms. It falls apart when the honest answer depends on hundreds of them.

This guide walks through a faster way to check a username across every site that matters, how to read the results without jumping to conclusions, and what to do once you have them.

Why check everywhere, not just the big platforms

Most people check the handful of social networks they use every day and stop there. That leaves gaps. A username can be free on the big apps and already claimed on a forum, a code host, a gaming network, or a creator platform where your future audience actually hangs out. If someone else is active under that name in your niche, you will be competing with them in search results and in people's memories.

Checking broadly up front tells you three useful things:

• Where you can claim the name today, so you can register it before someone else does.
• Where it is already in use, and whether that use is active, abandoned, or a different person entirely.
• How crowded the name is overall. A handle that turns up on dozens of sites is probably too common to build a recognizable identity around.

The manual method (and why it does not scale)

The old-fashioned way is to type site.com/yourname into the address bar for each platform and see whether a profile loads. It works, but it is slow and surprisingly error-prone. Some sites show a friendly page for missing profiles instead of an error. Some redirect you to a login screen. Some quietly block repeated requests. After twenty tabs you start to lose track of what you have already checked.

The manual method still has a place, though. It is exactly how you should verify the interesting results from an automated scan, which we will cover below.

Step by step: check a username on 3,150+ sites at once

The WhatsMyName Apps username search is free and needs no sign-up. It checks a username against more than 3,150 sites, using site lists from the open-source WhatsMyName, Sherlock, and Maigret projects.

1. Enter the username. Type the handle exactly as you would want it, without the @ sign. You can also open the tool with an example handle prefilled to see how it works.
2. Start the scan. Results stream in live as each site responds, so you do not have to wait for the whole list to finish before you start reading.
3. Try variations. You can check up to five usernames at once, which is handy for comparing options like yourbrand, yourbrandhq, and getyourbrand side by side.
4. Check the matching domain. The tool also checks whether the name is available as a .com, .net, .org, .io, or .us domain using public RDAP data, so you can see the full picture in one place.
5. Export what you find. Download the results as JSON or CSV if you want to keep a record or work through them in a spreadsheet.

A note on privacy: the username you type is sent to our server only to run the check. It is not stored or logged.

How to read the results

Every site in the scan gets one of four statuses:

• Found means the site returned what looks like an existing public profile for that username. For found results, the tool also fetches basic profile details such as the display name, avatar, and bio when the site makes them public.
• Not found means the site's response matched the pattern for a missing profile. On most sites, this suggests the name is available, though some platforms reserve names or have extra rules.
• Blocked means the site refused or rate-limited the request, so no answer was possible. This is common on platforms with aggressive bot protection.
• Unknown means the response did not clearly match either pattern. The site may have changed its layout, timed out, or returned something unexpected.

Treat every result as a lead to verify, not as a fact. Websites change their pages often, and the open-source detection rules are maintained by volunteers who cannot catch every change the day it happens. A "Found" can occasionally be a false positive, and a "Not found" can occasionally miss a profile.

How to verify the results that matter

You do not need to verify all 3,150+ results. Focus on the platforms you actually plan to use.

• For "Found" results, click through to the profile. Does it actually exist? Is it active? Look at the last post date, follower count, and bio. An empty, years-old account is a very different situation from an active creator with the same name.
• For "Not found" results on platforms you care about, try to register the name. The signup form is the final authority, since some sites reserve names, ban certain words, or block names that were recently deleted.
• For "Blocked" and "Unknown" results, open the profile URL manually in your browser. A human visitor often gets through where an automated check did not.

What to do once you have the answers

If the name is free on the platforms that matter to you, claim it on all of them in one sitting, even the ones you will not use right away. Reserving a handle is free on most sites and saves you from finding a lookalike account later. Our guide on protecting your brand name across social media covers that process in more detail.

If the name is taken on a platform that is central to your plans, consider a small, consistent variation you can use everywhere, rather than a different handle on each site. Consistency makes you easier to find. For ideas, see choosing a unique username.

If you discover that an account under your exact name is impersonating you, report it through that platform's official impersonation process rather than contacting the account owner directly.

Common mistakes to avoid

• Trusting a single "Not found." Always confirm availability by actually trying to register on the platforms you care about.
• Assuming a "Found" profile belongs to a specific person. A matching username on two sites does not mean the same person owns both. Many common names are used by many unrelated people.
• Ignoring case and punctuation rules. Some sites allow dots, underscores, or dashes and others do not. Check the exact form you plan to use.
• Waiting too long. Availability changes. If a name is free today and you want it, register it today.

A word on responsible use

A username search only looks at public profile pages, the same pages anyone can open in a browser. Even so, use it for legitimate purposes: checking your own name, protecting a brand, or research you are entitled to do. WhatsMyName Apps is not a consumer reporting agency, and its results must not be used for decisions about employment, credit, housing, insurance, or any other purpose covered by the Fair Credit Reporting Act (FCRA).

Ready to try it? Run a free username check and see where your name stands.