When you run automation and data collection, addresses from open lists fail on the first requests. A set of private addresses with automatic rotation keeps the load steady. So the scraper gets through the whole list, it makes sense to take fast IPv4 and SOCKS5 proxies with spare threads. Pool and plans: Proxy for Check Plans cover 1,000, 3,000 and 5,000 threads. There is a free test of up to 2 hours before you pay. For HTTP/HTTPS proxies the software connects right away.