Friday, August 6, 2021

How do multi-national ISPs break up their address space?

I'm curious to know how large, multi-national ISPs break up their address space between infrastructure subnets, loopbacks, and customer address space. I imagine they would have separate IP allocations for each region? (I.E. Different supernets for North America, South America, Europe, etc). How do they handle summarization, and where do they summarize at?



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