Data held by ISPs

Mark Harrison mark at
Thu Dec 18 14:34:05 GMT 2014

I'm not an expert on this subject but I agree that the correct route would
be a SAR. I would be interested in seeing the detail in the logs. How
identifiable would they be in native form? I guess if its anything like
normal proxy logs they would only log the IP address and activity (poss
MAC) in which case they would need to then identify who add that IP address
and at what time from DHCP logs.

I wonder how hard the process of identification would be for the ISPs that
allow personally owned routers to connect to their services rather than the
ISP's branded boxes?

This might help....


On 18 December 2014 at 06:49, William Heath <wmheath at> wrote:
> That would be a DPA subject access request as others more expert than me
> would quickly confirm. It would be interesting to hear what sort of results
> you get. William
> On 18 Dec 2014 06:37, "Peter Fairbrother" <zenadsl6186 at> wrote:
>> Being curious about exactly what data my ISP hold about me - things like
>> sessions, how are they worked out? what is a session? how long are they
>> stored? - I was thinking about asking mine for a copy of this, via a
>> freedom of information act request.
>> My question is, would they redact that data, and if so how much? Eg if
>> data was stored under ACTA, would they include it?
>> Any hints would be useful,
>> -- Peter Fairbrother
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