Monitoring of the Used External Network Addresses
In the Cloud Broker Portal on the External Networks page you get an overview of the number of available ("free") IP addresses per external network:
From there you can click through to the External Network Details page:
Under the section Free IPs all free IP addresses are listed:
Next all cloud spaces are listed that use one of the external network IP addresses :
Also all virtual machines are listed that are directly connected to one of the external network IP addresses.
See External Networks for more details.