I've dabbled with geo IP services before, and you're right—they can be super helpful in identifying VPN endpoints, Tor nodes. But, here's the thing about blocking VPNs—it's like playing whack-a-mole. As soon as you block one, another pops up. And with LTE proxies thrown into the mix, it adds another layer of complexity. They're harder to detect since they use mobile networks, making them seem like regular users. In my experience, it's essential to balance security with accessibility. Sure, blocking VPNs might deter some unwanted traffic, but it could also inconvenience legitimate users who rely on VPNs for privacy or accessing geo-restricted content.