Select Start > Settings > System > About. If your PC is on a work domain, Full device name shows it after the device name, such as ALEX-PC.corp.contoso.com. You can also open Command Prompt and type systeminfo | findstr /B “Domain”.
Applies to: Windows 11 PCs, usually work or school PCs. Checked on September 29, 2026.
What a domain is
A domain is a group of computers managed together by a company or school. Home PCs usually aren’t on a domain. They’re in a workgroup, which is often just called WORKGROUP. IT staff sometimes ask for the domain name when helping you. Some organizations manage PCs through the cloud instead; for that setup, see how to join Windows 11 to Microsoft Entra ID (Azure AD).
Check in Settings
- Select Start > Settings > System > About.
- Look at Full device name under Device specifications. The part after the first dot is the domain.
- For more detail, select Domain or workgroup under Related links. The window that opens shows Domain or Workgroup.
If Full device name matches the Device name with nothing after it, the PC isn’t on a domain.
Check with Command Prompt
- Select Start, type cmd, and open Command Prompt.
- Type systeminfo | findstr /B “Domain” and press Enter. The line shows the domain, or WORKGROUP.
- To see the short domain name used when you sign in, type echo %USERDOMAIN% and press Enter.
If the short name is the same as your PC’s name, you’re signed in with an account on this PC only, not a domain account.
Frequently asked questions
Is this the same as a website domain?
No. This is the network domain your PC belongs to at work or school. It has nothing to do with a website address.
Can I join or leave a domain myself?
Joining or leaving a domain needs an administrator, usually your IT team. Ask them before you change it.
Where can I see other details about my PC?
See how to check your PC specs in Windows 11. For more about Command Prompt, see how to open Command Prompt in Windows 11.
The Settings steps follow Microsoft’s answer on finding your domain name in Microsoft Q&A. More help is on our Windows Help & Guides page.
Matt Jacobs has been working as an IT consultant for small businesses since receiving his Master’s degree in 2003. While he still does some consulting work, his primary focus now is on creating technology support content for SupportYourTech.com.
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