The list of IP addresses configured on the server can be viewed from Home -> Tools & Settings: IP addresses management. Alongside the list of IP addresses you will find the status of each IP address (shared vs. dedicated) and the number of resellers and/or sites using each address. (The number of sites using IP address 216.70.96.25 will be greater than zero.) Click on that non-zero number to see which subscriptions are currently using the address (and then change each domain individually).
HTH,