Earlier quoted context omitted.
Map: https://www.caida.org/research/id-consumption/census-map/ima... (a bit dated, but shows the historic allocations) Look up "CIDR", history thereof, for reasons why it looks this way.
Crazy how wasteful it is. I wonder what genius thought to allocate /8 to every company/organization. You don't need to have PhD in statistics and math to know there's more than 250 companies.
Or, if my networking trainer at a Cisco course is to be believed, the geniuses that made IPv6 subnets contains 65k hosts at a minimum, when due to ARP requests all traffic would be dead at that scale.