This is a legacy protocol that supports TCP connections only. It does not support UDP (meaning no gaming or streaming) and lacks the authentication features found in SOCKS5.
Online Proxy Checker - Free Browser-Based Proxy Testing Tool
Large free lists are often "scraped" from public sources. This means they are likely high-latency and have a high failure rate . Pros & Cons
The .txt format is highly convenient because most automated tools (like scrapers or checkers) can ingest lists in the standard IP:Port format directly.
A list of in .txt format is a common type of "proxy dump" often found in developer repositories or free proxy forums. While the sheer volume of 6,490 IPs sounds impressive, their utility depends entirely on their freshness and your specific use case. The Breakdown