For heavy scraping and multithreaded jobs, public addresses from open lists hit captchas and bans fastest. A closed pool with SOCKS5 and HTTP works where public addresses get blocked. For tasks like these, it makes sense to take fast IPv4 and SOCKS5 proxies with spare threads. Plans and access: https://telegra.ph/Rotating-proxies-for-web-scraping-staying-under-rate-limits-10-21 The pool keeps 12,000 to 15,000 addresses online. Traffic is not billed by the gigabyte. For Proxies for SEO tools GSA checker the addresses go straight to work.