For heavy scraping and multithreaded jobs, free public lists go dead quickly. An IPv4 pool with rotation works where public addresses get blocked. So the scraper gets through the whole list, users pick fast IPv4 and SOCKS5 proxies with spare threads. Pool and plans: Proxy for A-parser Access works by list link or IP binding. Traffic is not billed by the gigabyte. For best proxy for web scraping the pool runs from the first launch.