I'm no lawyer but in the U.S., 18 USC 2703 appears to indicate this data must be kept for at least 180 days.

-Scott

On 12/12/13 06:34, Sam Moats wrote:
I'm not sure about the current state of the industry it's been a while
since I was responsible for an access network. In the past we would keep
radius logs for about 4 months, these would include the username,IP
address and yes (to date myself) the caller id of the customer at the time.

Sam Moats

On 2013-12-12 03:49, Ray Wong wrote:
been a while, but seems like lately it's more a question of how long.
ISPs
can be in position where they need to, but as things have consolidated,
seems like they'd really like to forget it as soon as they can. If you've
got a specific case in mind, likely best to find a direct contact and
get a
response about policy, even if it has to be off-record. The big ones
(like
one I likely shouldn't mention by name unless they do as I don't work for
them) definitely do, at least long enough to handle DMCA requests and
other
legal obligations.

-R>


On Wed, Dec 11, 2013 at 9:36 PM, Mikael Abrahamsson
<swm...@swm.pp.se>wrote:

On Wed, 11 Dec 2013, Carlos Kamtha wrote:

 just a general curiousity question. it's been a long time since ive
worked at an ISP.

back then it was non-expiring DHCP leases and in some cases static
IP for
all.. (yes it was long ago..)

Any feedback would be greatly appreciated..


Yes, it's very common to keep track of what user account/line had
what IP
at what time.

--
Mikael Abrahamsson    email: swm...@swm.pp.se






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