When you make a creative work (which includes code), the work is under exclusive copyright by default. Unless you include a license that specifies otherwise, nobody else can copy, distribute, or modify your work without being at risk of take-downs, shake-downs, or litigation. Once the work has other contributors (each a copyright holder), “nobody” starts including you.
The following repositories don't include a license:
I request that the following data is removed from The Stack:
Note, there's several repositories that have been used which don't have a license file
Note that: https://choosealicense.com/no-permission/
The following repositories don't include a license: