Number of IP addresses in some IP pools is shown as negative or even NaN in Total column under
Top > Service Director > IP Manager > IP Pools.
As a workaround, please re-save each of the IP pools without any changes to them:
Top > Service Director > IP Manager > IP Pools > IP Pool name > Edit > Update.
It is also recommended to create a database backup before applying the workaround, just in case:
# mysqldump aspc --extended-insert=false > aspc.dump.`date +%F.%s`.sql