do ISPs keep track of end-user IP changes within thier network?

Jon Lewis jlewis at
Mon Dec 16 16:01:35 UTC 2013

On Sun, 15 Dec 2013, explanoit wrote:

> Another question:
> I would think that the systems that keep the logs get backed up to tape, 
> right? Wouldn't this mean the data is kept for years off-site? Do they not 
> offsite backup the access logs ever?

I wouldn't assume anything like that these days.  Lots of people gave up 
on tape for backups years ago.

  Jon Lewis, MCP :)           |  I route
                              |  therefore you are
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