WhatsMyName (WMN) is a community-maintained dataset that lets you find out if a username exists across hundreds of websites. If you're investigating a person of interest, verifying an online identity, or simply curious about your own digital footprint, this project powers the tools that make that possible.
Created in 2015 by Micah "WebBreacher" Hoffman, WhatsMyName started as a personal fix for a real frustration: existing username checkers were full of false positives. Over the years, contributions from people all over the world have grown it into one of the most widely-used username enumeration datasets in the OSINT community.
WhatsMyName has grown well beyond this repository. Many tools and sites now build on our data, and some have adopted the WhatsMyName name as well. Not all of them are connected to this project. The tools in Tools and Sites That Use WhatsMyName use WhatsMyName data and acknowledge the project. If you're looking for a username search built on WhatsMyName data, start there.
Short link: whatsmyna.me redirects to this repository and is our official domain name.
- Just want to search a username right now?
- How It Works
- Tools and Sites That Use WhatsMyName
- Help Keep WMN Accurate
- Stay Connected
- License
Head to whatsmyname.app -- a free, browser-based tool built directly on this dataset. No installation required.
Or check out the many tools below that use WMN.
WMN is a single, carefully maintained JSON file (wmn-data.json). Each entry describes how to check one website for a username -- what URL to query, what a successful response looks like, and what a "not found" response looks like.
Tools and scripts read this file and do the actual checking. That separation means anyone can build a checker, and the data stays accurate regardless of which tool you prefer.
For a site to be included, it must:
- Be publicly accessible -- sites behind paywalls or login walls can't be checked
- Include the username in the URL -- the profile URL must contain the username directly
- Not transform the username -- sites that swap usernames for numeric IDs won't work
In May 2023, we removed the bundled checker scripts and shifted focus entirely to maintaining the data file. See the tools section below for checkers that use our data.
| Tool | Type | Description |
|---|---|---|
| whatsmyname.app |  | The go-to web interface by the OSINT Combine team. Filters by category, exports to CSV and PDF, always pulls the latest data. |
| Tool | Type | Description |
|---|---|---|
| Naminter |  | Built specifically for this dataset. Supports Cloudflare bypass, browser impersonation, concurrent checking, and extensive config options. |
| Blackbird | | Fast username search that integrates WMN data. |
| WhatsMyName-Python | | Simple Python script by @C3n7ral051nt4g3ncy. |
| Tool | Type | Description |
|---|---|---|
| NameSeeker |  | Cross-platform desktop app for username and email search across hundreds of sites. Exports to PDF, CSV, and JSON. |
| Maltego WhatsMyName Transforms |  | Local Maltego transforms that check usernames in real time using the JSON file. |
| Who Am I |  | Chrome/Brave extension combining WMN data with Sherlock and Maigret, by OSINT Liar. |
| Tool | Type | Description |
|---|---|---|
| WhatsMyName-Web |  | Simple Flask web app version of WhatsMyName by @AXRoux. |
| WhatsMyName Docker |  | Docker API wrapper over the WMN tool by @kodamaChameleon. |
WhatsMyName is the name of this project, created by Micah Hoffman in 2015.
The CC BY-SA 4.0 license covers the data in this repository. It does not grant rights to the WhatsMyName name or logo. You are welcome to build on the data, and we ask that you credit the project as the license requires, for example: "Uses data from the WhatsMyName project (CC BY-SA 4.0)."
Using the name in your tool:
- Describing what your tool uses is fine: "Powered by WhatsMyName data", "a WhatsMyName client", "WhatsMyName transforms for Maltego".
- Naming your product, domain, app or social accounts "WhatsMyName" (or a close variant) needs our permission first. This includes ad-supported and commercial sites. It keeps users from confusing your product with this project.
- Don't describe your tool as "official" or imply it is run or endorsed by the WhatsMyName project unless we have agreed to that in writing.
Sites, apps, or services whose name or domain uses "WhatsMyName" or a close variant will not be listed on this page unless we've given permission. Community scripts and libraries that describe themselves as a WhatsMyName client or tool are fine. If you are making an awesome username checker tool, choose a strong name for it that is unique from this project's.
Questions or permission requests: open an issue in this respository.
The only official home of WhatsMyName is this repository: https://github.com/WebBreacher/WhatsMyName and https://whatsmyna.me.
This project only stays useful if the detections stay accurate. Websites change their profile URLs, response codes, and page content constantly. We need contributors to help find new sites and fix broken detections.
You don't need to be a developer. Here's how to help at any level:
| Experience level | How to contribute |
|---|---|
| No technical background | Submit a site via this form |
| Comfortable with GitHub | Open an issue with a link to an example profile |
| Comfortable with JSON and HTTP | Fork the repo, fix or add a detection, and submit a pull request |
See CONTRIBUTING.md for detailed instructions on adding or fixing site detections, including format requirements and examples. Please also read our Code of Conduct.
Follow the project on LinkedIn for updates.
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.