ASNsize
Each rectangle represents an ASN (number is in the rectangle)
Size of the rectangle is proportional to the total address space the ASN announces (IPv4)
Color of the rectangle is proportional to the percentage of deaggregated prefixes relative to the total this ASN originates (green = low, via yellow to, red = high)
Hover will show a tooltip with ASN, asnsize (number of IPv4 addresses) and deagg percentage