> they'd have to keep lists of IP addresses associated with the VPN services they want to block. Yeah, that's probably what they're doing. It wouldn't be too

> they'd have to keep lists of IP addresses associated with the VPN services they want to block. Yeah, that's probably what they're doing. It wouldn't be too hard for them to get the first 95% either - beyond ARIN/NIC registration searches etc, they could just look for IP addresses that often have a large number of subscribers behind them, especially a large number of non-us subscribers.