A long list of IP addresses followed by port numbers (e.g., 192.168.1.1:1080 ).

SOCKS4 is an older routing protocol. It is less secure than SOCKS5 because it does not support authentication or UDP traffic.

If you are looking for functional proxies, a file from mid-2023 will not be useful today. You would be better off searching for a proxy list or using a reputable paid service if you require stability and security.

Since these are public and likely shared by thousands of users, connection speeds are usually very slow with high latency. Recommendation

Because this file dates back to July 2023 , most (if not all) of the proxies listed are likely "dead" or inactive. Public proxy IPs rarely last more than a few days.