Generally slow. Because they are open to the public, bandwidth is heavily throttled. Lists like roosterkid help by listing latency.

If you require high success rates (99%+) and stability for web scraping or bulk tasks, commercial providers offer more security than public text lists:

: One of the most popular community-maintained lists. The socks4.txt file is updated frequently and typically contains several thousand active entries.

: High success rate (99.95%) but significantly more expensive than free alternatives.

. SOCKS4 does not support encryption or authentication. Your data may be visible to the proxy owner. For secure tasks, SOCKS5 is strongly preferred. Maintenance

: Includes geolocation info and is updated every hour, ensuring a lower "dead proxy" rate than static lists. Complete Review: Pros and Cons of Free Socks4 Lists Quantity