Re: IP ranges used in North America, Hawaii, and Alaska?

In article <77pdq1l8qn1pu49edckpom6m7ra51dtus2@xxxxxxx>, Alan Jones wrote:
>
> Here's the list. Please tell me what you think...
> http://www.iana.org/assignments/ipv4-address-space

Interesting that "Digital Equipment Corporation" and
"Bolt Beranek and Newman" still own /8s. DEC was
carved up and eaten by Compaq and Intel, with the
best part (Alpha) going elsewhere. BBN ain't the same
BBN. Also interesting that Halliburton owns one.

The IANA list is fairly useless for blocking by nation
of origin. The original poster would perhaps be more
interested in www.blackholes.us.

Another poster advised blocking 24/8. It's a good idea,
but when we tried it we discovered dozens of outbound
MTAs belonging to cable TV operators Videotron.ca,
RR.com, Shaw.ca, Charter.com, Cox.net, and some little
ones in Virginia. If your business wants mail from
consumers, be careful there.

We've been refusing email from 60/8, 219/8, 221/8,
and 222/8 for years, with no complaints from anybody.
I'm tempted to do it at the firewall instead of the
email server. Likewise 200/7, but a few of my users
have correspondents down there.

Speaking of 221 and 222. Consider the Great Firewall
of China, grepping for keywords offensive to the
PRC government like "slave labor" and "free Tibet".
Our MTA rejects SMTP from there, with some of those
keywords in our 553 message.
What if everybody did that? (Fat chance.) What if
1% of us did? Spammers causing false firewall hits
could help change the PRC's current policy towards
hosting them. At the least, it sure would raise
the false positive rate.


Cameron


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