Most of the spam I get is from overseas. As I have virtually no use for overseas mail I'd like to block the IP addresses for the countries I'm receiving mail from. To do this I need a list of netblocks (i.e., blocks of IP addresses, e.g. 16.150.0.0/14) assigned to all countries and/or regions. Even if there aren't, I can analyze my existing spam and choose key areas to block. Where can I get such a list?
(N.B. I am not looking for sites that allow you to look up individual IP addresses, such as whois. I am aware that whois will provide limited netblock information, e.g. an ISP's netblock, but it is too limited for me. I want to banish Asia in one fell swoop. Ok, maybe a few fell swoops.)
P.S. If anyone knows of software that can analyze a bunch of spam and produce a map or report on which countries or networks are most implicated, that would be cool to know about.
2006-10-18
15:43:13
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