ip block history.

Mailman List Mirror (Read Only)
1

probably an odd question …

we have been assigned a few large blocks of IPs, and while configuring BGP i got to wondering what these block's history might be. who had them in the past, etc..

is there a publicly accessible db or similar which tracks that type of information, or is that liability concern?

thanks!
greg

2

www.Whois.net; whois.arin.net, etc.

~Jay Murphy
IP Network Specialist
NM State Government
"We move the information that moves your world."
“Good engineering demands that we understand what we’re doing and why, keep an open mind, and learn from experience.”
“Engineering is about finding the sweet spot between what's solvable and what isn't."
               Radia Perlman
 Please consider the environment before printing e-mail

3

that will show past whois records or just current? I didn't see any options for historic records on arin,

thanks by the way.

-g

4

assuming the whois data has been cleaned up the next resource to look at
is:

routeviews or ris table dumps to see where or if it was advertised in
the past, and from where.

google and rbl lists are also worth querying in that context.

joel

5

I second this...

~Jay Murphy
IP Network Specialist
NM State Government
"We move the information that moves your world."
“Good engineering demands that we understand what we’re doing and why, keep an open mind, and learn from experience.”
“Engineering is about finding the sweet spot between what's solvable and what isn't."
               Radia Perlman
 Please consider the environment before printing e-mail

6

Thanks for the pointers Joel!
google knows all, scary isn't it?

-g

7

RIPE has been developing a couple of projects to support this sort of
history searching:

Internet Resource Database (INRDB):
<http://labs.ripe.net/Members/kistel/content-intro-inrdb-internet-number-resource-database>

Resource EXplainer (REX):
<http://rex.ripe.net/>

8

There has been a suggestion in the ARIN region for a whowas service.

   - Suggestion 2008.15 – WHOWAS service. Implementation to be completed as
   part of ARIN Online

9

Indeed, REX is our prototype tool for these kind of questions. It has its own limitations, but so far it's the best tool I'm aware of.

Robert