Skip to content
Tools

Username search: find a username on 600+ sites

Enter a username and DuckINT checks hundreds of public sites (the WhatsMyName list) and developer and community platforms such as GitHub, GitLab, Mastodon, Bluesky and Telegram at the same time. Each found account links to its profile and names the source that reported it.

Free account needed: sign in or create one in a few seconds, and the search runs right after.

What it shows

  • Accounts with that username on hundreds of public sites, with a link to each profile.
  • Profile details the platforms make public, such as display name, creation date and linked sites.
  • Repositories, gists and packages of developer accounts.
  • Earlier X (Twitter) usernames of an account, where they were recorded.

Sources it checks

One search asks all of these at the same time. Each result names the one that returned it.

  • Bluesky
  • Chess.com
  • Codeberg
  • Docker Hub
  • GitHub
  • GitLab
  • Hacker News
  • Hudson Rock
  • Hugging Face
  • Intelligence X · Pro plan
  • Keybase
  • Kryptonite
  • LeakCheck
  • Lichess
  • Mastodon (mastodon.social)
  • memory.lol
  • npm
  • OathNet
  • Roblox
  • SpoofWave
  • Telegram
  • WhatsMyName
  • Wikimedia

What to do with the result

  1. Treat a match as a lead: the same username on two sites can belong to two different people.
  2. Open the profiles and compare details such as avatar, bio and linked sites before you conclude anything.
  3. Use the investigation board to keep the accounts you checked, with your notes and status.

Questions

Does a match mean it is the same person?
No. A username is not unique across sites. DuckINT shows where a username exists; confirming who is behind an account takes more evidence.
Which sites are checked?
The list below shows the sources a username search runs right now, from DuckINT's live source registry.
Can I stop my username from being searched?
Yes. The removal page excludes your username from DuckINT searches, free of charge.