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Yeah, but all traffic from googlevideo.com is uncapped, but traffic from google.com is... how do they know which IPs to block? Youtube has like a ton of them and they probably change from time to time. If it's IP-based, how do they compile a list of IPs that are guaranteed to be youtube video content, but not anything else?

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>Youtube has like a ton of them and they probably change from time to time.

While that's true, it is not that many IPs, and they do not change that much.

Maintaining a list of IPs for YouTube, Netflix, and other mainstream services is probably a couple hours of work per week at most, probably distributed between multiple people in whatever department handles it.

I'd imagine it will get more difficult for ISP's if encrypted DNS becomes standard.

At this moment, they will have allowed IP ranges, that would cover for example; YouTube.

Edit: Also, an ISP can always see what your endpoint is, as they would have to in order to give you the connection. The only exception to this being VPN's and TOR.

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