The number of ports = the number of possible simultaneous IP connections. The smallest package includes 300 ports meaning it allows you to run 300 or fewer concurrent proxy connections.
Each port can handle no more than 20 requests per second. You'll be able to get 6000 simultaneous requests per second with our minimum package Starter WiFi.
You can specify the number of ports downloading proxy-list, in your software or creating the filter for the IP-authorisation.