Each call needs your Connection Hostname

Each API call requires that you define the HOST: and include your Connection Hostname.

Host: [Domain Prefix]-nsu.akamaihd.net

This full value is your NetStorage HTTP API "Connection Hostname". The [Domain Prefix] is a unique value you set up and associate with the target storage group when it is created. The remaining value, "-nsu.akamaihd.net" is the specific URI associated with the NetStorage Usage API.

You can view your Connection Hostname in the NetStorage Groups UI in Control Center.