A repo to track the relative size, in terms of IP addresses, for different services using relatively large IPv4 pools, such as cloud providers. If you want to look up an IP address, you can see if it's from any of the cloud providers using this tool or using this Python script.
To get a daily update of the counts:
Currently, they providers have this many IPv4 addresses, shown with a logarithmic scale:
Over time, each item's day to day change in percent:
An IP map of the big providers, in the style of XKCD's map of the Internet:
