This article explains how to create a group policy object for the domain that will set the Local Intranet Sites list in IE.

This is the domain group policy equivalent of the following:

IE > Internet Options > Settings > Internet Options > Security > Local intranet > Sites > Advanced

or

Chrome > Settings > Advanced > Open proxy settings > Security > Local intranet > Sites > Advanced

To add the domain, a machine, or a site to the local intranet sites list do the following:

1. On the domain controller open Group Policy Management
2. Group Policy Management -> Forest -> Domains -> domain -> Group Policy Objects -> Default Domain Policy -> (right click) Edit…
3. Group Policy Management Editor
4. Default Domain Policy -> Computer Configuration -> Policies -> Administrative Templates -> Windows Components -> Internet Explorer -> Internet Control Panel -> Security Page
5. (right hand pane) double click Site to Zone Assignment List
6. Site to Zone Assignment List Properties
7. Select Enabled
8. Show…
9. Add…
10. Name:
    
    Ex1: http://*.mydomain.local
    Ex2: https://*.mydomain.local
    
    
11. Value: 1 (this is for Local Intranet)
12. OK
13. OK
14. Close Group Policy Management Editor
15. Close Group Policy Management
16. A workstation reboot is required for the policy to be applied. Local edits on the workstation will no longer be possible.

References

Microsoft KB 303650