The Residential Proxies are real residential devices that are automatically replaced every few hours.
These proxies are billed based on the amount of bandwidth used and are highly suitable for lower bandwidth usage. They are specifically designed for use in a Backbone Connection, meaning that the Proxy Address remains the same, but the assigned IP addresses change.
With automatic proxy rotation every few hours, you'll have the chance to use each one of the 30 million available IPs over the course of the month."