Sequent [reported as the owner of the netblock] is an IBM subsiduary, and part of its IP address ranges are used by IBM Global Services for their hosting operations.
% ping ir.sco.com PING client.shareholder.com (188.8.131.52): 56 data bytes
ir.sco.com is a virtual host on an investor relations system run by shareholder.com and it's plausible that SCO did not previously know the ultimate hosting location, nor IBM the identity of shareholder.com's clients.
Posted by Mike Prettejohn in Dogfood
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