Can People See Your Old Usernames? We Checked 13 Platforms

Changing your username doesn't always erase the old one. On some platforms, anyone can still see it. On others, a stranger can claim it the moment you let go.

We checked 13 platforms on October 27, 2026, using their help pages, public data and live profiles. Here's what each one shows, and how to hide yours.

What we found

• Roblox shows your past usernames to other players. There's no setting to hide them.
• Bluesky keeps every handle in a public log that "can not be redacted or purged." Bluesky's own first handle is still in it.
• Steam lists old profile names. A Valve developer's profile still lists 10, including his current one, back to December 2010. You can clear yours.
• Discord shows your pre-2023 name#1234 when someone hovers over a badge, unless you turn it off.
• X shows only how many times an account changed its username. Instagram says the same, but on public profiles your last two usernames can still be found.
• On X, someone else can take your old username right away. GitHub releases yours for anyone to claim, too.

Which platforms show your old usernames?

Sources: platform help pages and our own checks, October 27, 2026. Links throughout the post.

Roblox: every past username, and no off switch

Roblox's help page is blunt: "Other players can see your previous usernames through People search."

Image: our capture of Roblox Support, October 27, 2026. The page was last edited October 2, 2026.

There's no privacy setting for this. The only exit is a "right to be forgotten" request, which deletes your account. Then, Roblox says, "your past usernames will be permanently retired and prevented from re-use."

Many Roblox players are kids. If your child changed names to get away from someone, the old name still shows. Block and report that person in Roblox, and check the account's parental controls.

Bluesky: a public log that never forgets

Bluesky handles are stored in a public directory called PLC. Its spec says the history "is permanently publicly accessible," even after deactivation. Handles in it "can not be redacted or purged."

Bluesky's own account shows how this works. It started as bluesky-team.bsky.social on April 12, 2023. It became bsky.app 12.5 hours later. Three and a half years on, anyone can still read the first handle.

Data: plc.directory audit log, fetched October 27, 2026.

Nearly all Bluesky accounts use this log, including every one made on bsky.social. If you used a handle with your real name, assume it's public for good.

Steam name history: back to 2010

Click the small arrow next to a Steam profile name. A list opens: "This user has also played as."

Image: our capture of Robin Walker's Steam profile, October 27, 2026. Dates come from Steam's own alias data.

Robin Walker, a longtime Valve developer, shows 10 names, including his current one. The oldest is from December 2010. On a public profile, anyone can open the list without logging in.

Unlike Roblox, Steam gives you a way out. On your own profile, open the same list and choose "Clear previous aliases." A guide updated in August 2026 says this clears "the previous 10 profile names." Your sign-in name doesn't change.

Discord: your old name#1234, on hover

When Discord dropped the #1234 tags in 2023, it put each user's old name#1234 in a Legacy Username badge. Accounts made after that don't have one. "To see someone's old username, hover your mouse over the new badge on their profile," its help page says.

You can switch it off. Go to User Settings, then Profiles, and turn off the Legacy Username Badge toggle.

X and Instagram: a count, and sometimes more

Instagram's "About this account" shows a "Former username count." You "can see the number of changes made to an account's username," its help page says, "but not the former usernames themselves." The same page covers Threads.

That isn't the whole story. Instagram shows a warning when "an account we suspect to be deceptive" messages you. On flagged accounts, we've confirmed that this warning includes the account's last two former usernames. The app gets them from an internal endpoint, and that endpoint returns them for any public profile, flagged or not.

So if your Instagram account is public, assume your last two usernames can be found.

X added a similar "About this account" panel in November 2025. It shows how many times an account has changed its username.

When a user asked on X's developer forum in October 2026, an X staff member said such requests "need to go to X Support." We found no setting for it.

A count still says something. Instagram says it "may help identify whether an account is authentic or misleading." An account with 9 name changes and a new brand name is worth a second look.

Can someone take your old username?

Often, yes. That matters, because old links and mentions may now point to a stranger.

• X: your old username "will immediately be available for use by someone else," X's help page says.
• GitHub: your old name "becomes available for anyone else to claim," per GitHub Docs. A new owner can even override your repository redirects, and old @mentions don't redirect at all.
• YouTube: holds your old handle for 14 days. "Afterward, the handle will become available for other users," YouTube says.
• Twitch: old names take "at least 180 days" to free up, and Partners' old names never do. "Twitch cannot remove search results for your old username," its help page adds. Streamers' subscription links keep the name they signed up with.
• TikTok: blocks your old name "for a short period of time," per its help page.
• Reddit: once a username is set, it "can't be changed in any way," and deleted ones never come back, Reddit says.

Gone from the platform isn't gone

Mojang switched off Minecraft's public name-history lookup on September 13, 2022, according to developers who relied on it. When we tried it on October 27, 2026, it answered "Not Found."

The histories didn't vanish. Third-party sites such as NameMC still show a "Name History" box on profiles.

The same goes everywhere. Old profile pages sit in the Wayback Machine. Search results lag behind. Other people's replies and tags still use your old name.

How do investigators find old usernames?

Old usernames are among the most useful leads: one old handle can connect a new account to years of history. Investigators start with the platforms that publish them, like Roblox People search, Steam's list and Bluesky's log. Then they check archived profile pages and old replies that tag the person.

We make Fingerprint, online investigation software for private and fraud investigators. Some platforms that publish former usernames, such as Bluesky and osu!, are among the sites it checks. On those, Fingerprint shows the former usernames on the result and in the search's username summary. Former usernames are a paid field, on Pro and up.

Image: our Fingerprint username search for bsky.app, October 27, 2026. The ".bsky.social" ending is dropped from the old handle.

Deep Search, on Max, can then search those old usernames automatically.

Two cautions:

• Fingerprint shows former usernames only on platforms where it reads them. That doesn't include Steam or Instagram yet, and it can't recover names that X hides.
• An old username may belong to someone else now. On X, it can be reclaimed the same day. Confirm with dates or photos before you link two accounts.

How to hide your old usernames

• Discord: User Settings, then Profiles. Turn off the Legacy Username Badge.
• Steam: open the list next to your profile name, then "Clear previous aliases."
• PlayStation: when you change your online ID, don't choose to show the old one.
• Instagram: there's no setting. The last-two-usernames lookup works on public profiles, so a private account is your best bet.
• X: there's no setting. You can ask X Support through its help forms.
• Roblox and Bluesky: you can't hide them. On Roblox, only deleting your account removes them.

Then check what your old names still connect to. Search each one in Fingerprint's username search, or follow our digital footprint guide.

FAQ

Can people see your old usernames on Instagram?

Sometimes. Instagram's "About this account" shows only a "Former username count," the number of times an account changed its username. Instagram's help page says you can see that number "but not the former usernames themselves."

But when Instagram flags an account as possibly deceptive, its warning can include the account's last two former usernames. We've confirmed that the data behind that warning is available for any public profile. If your account is public, assume your last two usernames can be found.

Older names can also survive elsewhere, in other people's tags, comments and archived pages.

Can people see your old usernames on Roblox?

Yes. Roblox says "Other players can see your previous usernames through People search." There's no setting to hide them.

The only way to remove them is a "right to be forgotten" request, which deletes your account. Roblox says your past usernames are then "permanently retired and prevented from re-use."

Can people see your old Discord username?

Yes, if your account had an old-style name with a #1234 tag before Discord's 2023 username change. Discord put that old name in a Legacy Username badge, and anyone can see it by hovering over the badge on your profile. Later username changes don't appear in it.

You can turn it off. Go to User Settings, then Profiles, and turn off the Legacy Username Badge toggle.

Can you see someone's old X (Twitter) username?

Not on X itself. Since November 2025, X's "About this account" panel shows how many times an account has changed its username, but not the old names. We found no setting to hide that count. An X staff member said in October 2026 that such requests go to X Support.

Old X usernames can still turn up in archived pages, search results and old replies. Be careful: X frees an old username immediately, so it may belong to someone else now.

Can someone take my old username after I change it?

On many platforms, yes. On X, your old username is free for anyone right away, and GitHub also releases it for anyone to claim. YouTube holds old handles for 14 days, and Twitch holds old names for at least 180 days. TikTok blocks old names "for a short period of time."

Reddit is the exception: usernames can't be changed once they're set, and deleted ones never come back. Past Roblox usernames stay tied to your account, and a "right to be forgotten" request retires them for good.

How can you see someone's old usernames?

Start with platforms that publish them. Roblox shows past usernames in People search, Steam lists past profile names, and Bluesky's public PLC log keeps every handle. Archived pages on the Wayback Machine and old replies that tag the person also help.

Fingerprint, online investigation software, shows former usernames from some of the platforms it checks, such as Bluesky, on Pro plans and up. On Max, Deep Search can search those old usernames automatically.

Before linking two accounts, check that the old username wasn't reclaimed by someone else. Use only lawful sources, and only for a legitimate purpose.

The short version

Changing your username hides less than you'd think. Some platforms show the old names, some show a count, and some hand the name to a stranger.

Turn off what you can: Discord's badge and Steam's list. Skip PlayStation's 30-day display. For the rest, assume your old usernames are still out there, and check what they lead to.