Santa brought all of us ... a method for geolocating logical network addresses
In December, 2000, the assignee did not have direct access to the data and so "discovered" (there is prior art) a method that infers the data sought. Enjoy reading link.
Of course, all those personal information forms social networks and on-line retailers vacuum up tend to geo-locate the allocations of every dynamically assigned address block ISP use to provision wireless and wireline access points.
Jonah's been vomiting during the night and so we're up with not a lot to do but read USPTO filings.