While PapaProxy is known for selling premium datacenter proxies, they also maintain a "Free proxy list" builder. This list offers real-time raw IP addresses, ports, and country codes. For example, recent entries on their free list included IP addresses from Poland (212.127.95.235:8081) and Finland (213.165.58.8:1080). This is a great place to grab raw IPs if you are looking for generic proxy servers.