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Debbie Deutsch wrote: > > In this case, the articles had IP addresses in the NNTP-Posting-Host > field that were suspiciously similar (24.65.61.45 and 24.65.38.123). The > first two octets matched. (Each number separated by dots is called an > octet, because it represents an eight-bit number.) That was quite a > coincidence. I wondered if both belonged to the same ISP. I used a tool > that implements a function called "whois". It can take an IP address and > tell me who owns the address. Sure enough, both addresses belong to > Shaw, a large cable operator in Canada. So the first two octets designate the actual ISP? I would have thought the last two do, with the first two designating a broader, geographic region. Much like, say, the way country codes and area codes are for telephone numbers. With IP addresses, it's the other way around? --crymad
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