On 2021-09-02 2:01 p.m., Ronald F. Guilmette wrote:
In message <d2b21484-1cf4-49c8-9788-1fcf729df...@delong.com>,
Owen DeLong <o...@delong.com> wrote:
... there really isn't
anywhere else for most of those organizations to go and renumbering such
massive networks in 90 days is extraordinarily impractical even if it were
possible.
Are you sure about that "renumbering" part?
From where I am sitting it appears that about 1.7 million of those 6.2
million IPv4 addresses are running web servers on port 80 and that a
significant number of those, perhaps even a majority, appear to just be
serving up what I would call "cookie cutter" essentially identical content,
reachable only via what looks to me like essentially gibberish domain
names that are being cycled in and out on a frequent basis by someone
anyway.
The remaining 3.5 million IPv4 addresses don't seem to be running anything
that responds to port 80, and I kind-of suspect that a lot of this other
space is being used for proxies, and proxies don't need any forward or
reverse DNS at all, so renumbering those should be a piece of cake.
The bottom line is that the task of renumbering, in general, can be made
really really difficult if one has some reason to wish it so. I am not
persuaded however that it must be so in this specific case.
Regards,
rfg
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And don't get me started on spammers ;)
I will try to stay out of this conversation.
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