[Wimdon1]

Are Dynamic IP Addresses restricted to a certain area within a country or do they cover the whole country? For example is it possible for someone in New York to have the same Dynamic IP Address as a user in California? Or can the Dynamic IP address only be shared by users within say California (& then a separate list of IP Addresses used by users in New York)?

We believe we unearthed cyber-fraud at work, we have a customer with a home address in the far north of Romania but their IP address is in the South, they are claiming the use of a Dynamic IP address is the reason.

Any help would be greatly appreciated.

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[JustTrevor]

Are Dynamic IP Addresses restricted to a certain area within a country or do they cover the whole country? For example is it possible for someone in New York to have the same Dynamic IP Address as a user in California? Or can the Dynamic IP address only be shared by users within say California (& then a separate list of IP Addresses used by users in New York)?

We believe we unearthed cyber-fraud at work, we have a customer with a home address in the far north of Romania but their IP address is in the South, they are claiming the use of a Dynamic IP address is the reason.

Any help would be greatly appreciated.

IPs belong to one person.

Sounds more like a VPN.

Have you verified that the home address is a legitimate one? or even if its a legitimate address, have you verified that the people there are the ones using your service?

Edited by JustTrevor, 02 November 2013 - 04:58 AM.

[jscrizzle]

Your customer could have been using a proxy. A proxy would allow your traffic to appear to be coming from some place else.
To expand on dynamic IP addresses. ISP are assigned blocks of IP addresses so it is not possible for someone in California to get an IP address from their ISP then two months later someone in China get that IP address from their ISP.
Hope this helps!