Having run a mobile proxy service for over couple year, I was struggling with constant IP blacklist checks until I found Host Tracker. This tool is a game-changer for proxy management - it automatically monitors your IPs across major blacklist databases and alerts you instantly if there's an issue. What I love most is how it eliminated our manual checking routine. Set it up once, and it watches your IPs 24/7. When something gets flagged, you get instant notifications (I have mine sent to Slack). The detailed reports help pinpoint exactly why an IP was blacklisted, making fixes much quicker. Sure, the interface looks a bit dated, but the functionality is solid. For anyone running proxy services, this tool is a must-have. It's saved my team countless hours and helped maintain our service reliability.