North American Network Operators Group
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Re: Identifying when netblocks have been assigned

  • From: Stephen Sprunk
  • Date: Sat Sep 13 15:12:27 2008
Frank Bulk wrote: 
When I do that it lists the organization's AS, but not any netblocks
associated with that AS.

Frank

-----Original Message-----
From: Jake Mertel [mailto:[email protected]]

Frank,

Add the > operator in front of the organizations ARIN ID when you do
your WHOIS query and it will show all of the resources allocated to that
organization.

Keep in mind that the "> OrgID" trick only works for allocations or assignments made directly by ARIN; it won't necessarily show you everything that was SWIPed to them, since many SWIPs are not tagged with an OrgID. To find those, you have to search on the name of the customer and hope it shows up correctly in the CustName field.

Also, many companies end up with lots of OrgIDs, and many of them may not have the correct current name due to M&A activity. Finding them all may take a while and isn't easily automated.

S