matinsenpai/senpaiscanner

SenPai Scanner is a tool for finding Cloudflare IP addresses that actually work well on your network. Cloudflare operates a large global network with many IP addresses, and on some internet connections, particularly in regions where traffic is filtered or monitored, certain IPs work reliably while others are slow or blocked. This tool helps you find the good ones by testing a large batch of candidate IPs and ranking them by speed and reliability through your own proxy configuration. The tool is built around a two-phase approach. In the first phase it probes thousands of Cloudflare IP addresses in parallel, checking basic connectivity and whether each IP can establish the kind of connection your proxy uses. In the second phase it takes the best results from phase one and runs them through an actual end-to-end test using your proxy configuration, measuring real download speed and latency through the proxy path. The whole process runs through a terminal interface that you navigate with arrow keys, so there are no command-line flags to memorize. To use it, you paste a proxy configuration URL in the VLESS or Trojan format, set how many IPs to test and how many parallel workers to use, and start the scan. The results show each tested IP address, what transport type it used, measured download speed in megabits per second, latency to first byte, and whether it passed. When the scan finishes you press a key to copy the working IP addresses to your clipboard and save them to a file. The README includes practical advice for restricted networks: start with conservative settings, test multiple ports since Cloudflare's CDN ports behave differently under filtering systems, and re-run tests with a curated list after an initial scan. The tool handles network instability by retrying and by keeping a live results file that updates throughout the scan. Pre-built binaries are available for Linux, macOS, and Windows. The full README is longer than what was shown.