When you run automation and data collection, addresses from open lists fail on the first requests. A closed pool with SOCKS5 and HTTP spreads requests across thousands of addresses. So the scraper gets through the whole list, it makes sense to take fast IPv4 and SOCKS5 proxies with spare threads. Details: HTTP/HTTPS proxies Plans cover 1,000, 3,000 and 5,000 threads. Traffic is not billed by the gigabyte. For best proxy for web scraping the pool runs from the first launch.