Which other websites (or consumer media companies) have cabinets in ISPs arrive the globe; honestly I've only heard of Netflix doing it.

So, are there CDNs without their own racks anywhere?

Some of Google's services.

See "Edge nodes": https://peering.google.com/#/infrastructure

YouTube does, and a bunch of other sites do it by using Akamai, CloudFlare, Fastly, etc.

So Akamai, CloudFlare et al. will locate servers in a large ISPs data centre. TIL, I just assumed once a resource had been cached then they'd effectively have that collocation (logically); I'm surprised if avoiding the cost of the first hit really saves anything for static content.

Obviously anyone streaming video, it's different.

I wonder if BBC iPlayer (major streaming service in UK) collocate with ISPs.

Will those servers have a local (to the ISP) IP, or do the Akamai IPs get physically routed to the AS?

Fascinating stuff.

It is a CDN, but what's new is that the openconnect appliances are distributed not just in datacenters, but directly to ISPs. Traditional CDNs aren't in your ISP.

Akamai would like to have a word with you

Do Akamai has Servers right in ISP's DC / Network? I know they are within 1 hoops in lots of places, but never heard they are actually inside ISP's network, which is what Netflix OpenAppliance and Google Edge Node has done.

Netflix got the idea from Akamai. They are in your ISP for sure.