I pinged every IP address that wasn’t reserved. The image is 8k by 8k and is re-encoded as an AVIF to be friendlier to mobile devices. Like every other survey done, it is using a Hilbert Curve to convert the linear address space to a contiguous 2d space. The hotter the colors (blue is coolest), the denser the ping responses were.
Here is a 2006 survey to compare.
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every IP address
every IPv4 address
ipv6 would look like a starless sky
IPv6: a dark image
I left details out to be less verbose.
