Spammer subnets

[Jonathan]

I took the block list and visualized how the subnets of consecutive addresses compare. Note that I included all IP blocks, not just spam-related blocks, but it doesn't make a huge difference.

Interpret

Code: Select all

|||||||| |||||||| ||||/            91.124.215.53
|||||||| |||||||| ||||\\\\         91.124.216.115
|||||||| |||||||| |||||///         91.124.216.239
|||||||| |||||||| |||||\           91.124.221.169

as

Code: Select all

|||||||| |||||||| ||||| adjoining addresses are in the same subnet if there are 21 or less subnet bits
|||||||| |||||||| ||||/            91.124.215.53
|||||||| |||||||| |||| adjoining addresses are in the same subnet if there are 20 or less subnet bits
|||||||| |||||||| ||||\\\\         91.124.216.115
|||||||| |||||||| |||||||| adjoining addresses are in the same subnet if there are 24 or less subnet bits
|||||||| |||||||| |||||///         91.124.216.239
|||||||| |||||||| ||||| adjoining addresses are in the same subnet if there are 21 or less subnet bits
|||||||| |||||||| |||||\           91.124.221.169
|||||||| |||||||| |||||| adjoining addresses are in the same subnet if there are 22 or less subnet bits

It doesn't seem to be worth it to block entire subnets, because multiple spam addresses in a subnet are rare (not that I really planned to, but I was curious).