Don’t know what that means...
Assuming you’re on Windows...
1) open a cmd prompt by holding down the Windows Key and pressing the R key. The Windows Key is on the left between the Ctrl and Alt keys.
2) Type cmd then click Okay.
3) Now you should have a command shell. Type:
nslookup - 8.8.8.8 {ENTER}
4) Then type the domain you’re trying to browse to:
armslist.com
What results do you get?