System Administrators cannot add more than 5 IP addresses to a profile
|Knowledge Article Number||000230278|
Salesforce Classic UI:
Disable the featureTo resolve the limit, please disable "IP Restrict Requests," under the profile Administrative Permissions.
Salesforce classic UI:
1. Setup | Manage Users | Profiles.
New Lightning UI:
1. Click on top-right Gear icon | Setup Home | Users | Profiles