Looking for reliable SOCKS4/5 proxy lists in very diverse IP ranges, and they would preferably use SOCKS5 authentication (rather than IP-based authentication).
We are in need of a minimum of 1,000 concurrent connections, and would prefer to be able to use them in higher "bursts" (we don't always need more than 1000, but some operations can take more than one connection). The rest of the time, we use a very low amount of bandwidth - we aren't using these for web (although some HTTP requests are involved).
The proxies need to be reliable, and we may switch from one to another at any point, so preferably if we have a large list of them, all of them should be available for a long time.
Note: The proxies are not used for anything SPAM or illegal in any way. Expect zero heat/complaints when using this service. The proxies are needed to run multiple BOT threads.