x.com/<name> and twitter.com/<name>
Twitter user lookup
A Twitter user lookup checks whether an X handle has a public profile at x.com/<name>. UsernameLookup loads that page as a logged out visitor, reports found, free or unknown with the profile link, then looks for the same handle on 300+ other public sites.
What each result means for an X handle
X has more in between states than most networks. A handle can belong to a suspended account, a protected account or one that was deactivated recently. This is how those cases show up in a lookup and what you can safely read from them.
| What X shows | Our status | What you can conclude |
|---|---|---|
| A public profile | Found | The handle is in use. You get the link to the profile. |
| A protected profile | Found | The handle is in use. Posts stay protected and are not read. |
| A suspension notice | Found | The handle is held by an account, even if nobody can see it. It is usually not registrable. |
| The X page for a missing account | Free | No account answered with that handle when we checked. |
| A sign in prompt or a slowed reply | Unknown | Nothing reliable either way. Open the link and look for yourself. |
Recently deactivated handles are often held for a while before they can be claimed again, so a free result for a name that was active last week deserves a second check.
From one handle to a full picture in four steps
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1 / 4
Normalize
The @ is stripped and the handle is checked against the 2 to 50 character format we accept.
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2 / 4
Request
x.com/<name> is loaded without a login, alongside every other site in the catalog.
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3 / 4
Classify
The reply is matched to found, free or unknown using the signal X uses for a missing account.
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4 / 4
Compare
You see where else the handle lives and, on Investigator plans, how likely the profiles share an owner.
X has the strictest handle rules of the big networks
If a name has to work on X, start there. X allows the fewest characters and the shortest length, so a handle that fits X almost always fits Instagram, TikTok and Twitch too. The opposite is rarely true.
That is why naming teams often run the X lookup first and treat it as the constraint, then check the longer networks for the same string.
- length
- 4 to 15 characters for new handles
- characters
- letters, digits and underscores only
- not allowed
- periods, hyphens, spaces
- case
- not case sensitive, @Acme equals @acme
- reserved words
- handles containing Twitter or Admin are refused
- profile url
- x.com/<name>, twitter.com redirects there
Where an X handle usually shows up next
People and brands who are active on X tend to reuse the handle on the networks closest to it: other microblogging and federated social services, link in bio pages, newsletter platforms, and the social profiles of forums they post in. The lookup checks all of them in the same run.
A match on several sites is a pattern worth noting, not proof. Common handles are shared by unrelated people. On Investigator plans, the likely same person score from 0 to 100 lists its reasons, such as a matching display name, the same avatar or a link from one public profile to another, so you can weigh it instead of trusting a number.
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Social and microblogging
The closest neighbours of an X profile.
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Link pages and newsletters
Where people point their X bio.
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Forums and communities
Where the same handle often posts long form.
Who runs an X handle lookup
A brand team checks whether the company handle is free on X before announcing a rename. A creator confirms that the handle they use on YouTube is not already held by someone else on X. A trust and safety team sees a signup that lists an X handle and checks that a public profile actually exists there. A communications team watches for accounts posing as an executive, which is what the executive watch in brand impersonation monitoring is built for.
For handles you want to trace across every network at once, see the username finder, or start from a known profile with a reverse username lookup.
- Only public profile pages are checked, never anything behind a login.
- Protected and suspended accounts stay as they are. We report that a profile exists, nothing more.
- We do not try to work out who runs an account.
- Anyone can remove their handle from results at opt-out.
Questions about Twitter user lookup
Is a Twitter user lookup the same as an X handle lookup?
Yes. Twitter is now called X and profiles live at x.com/<name>. Old twitter.com links redirect to the same profile, so one check covers both names.
Do I need an X account to use this lookup?
No. UsernameLookup checks the public profile URL as a logged out visitor. You never connect an X account, and we never sign in to one.
What does it mean when X shows unknown?
X often asks logged out visitors to sign in, or slows them down after several requests. When the reply cannot be read as a public profile or as a missing account, the row is unknown with a link so you can open it yourself.
Can I see protected posts?
No. A protected account shows as found because the profile exists, but its posts stay protected. We only work with what is public without a login.
How do I keep my handle out of these results?
Submit it at /opt-out. After confirmation the handle is excluded from new lookups.
Look up an X handle now
Check x.com/<name> and the same handle on 300+ other public sites in one search.