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Almost same Ip

Posted: Tue Aug 28, 2012 3:47 am
by jorl003
Hello,

I want to know of 2 person who sends me emails that they are in real life the same person.

Person 1: On the 3rd of Aug: 81.11.183.133
On the 13th of Aug: 213.49.99.247

Person 2: On the 1st of Feb: 83.134.161.134
On the 28th of Aug: 213.49.98.247

First: How it is possible that their ip-adress changes?
Second: How it is possible that their ip-adress are almost the same?
Third: Are they the same person?

Thanks in advance!