Because I keep forgetting it, here's a test URL for www4.patents.ibm.com,
serviced by the NT machines, ap0120e0 & ap0121e0.

   http://www4.delphion.com/servlet/ipaddr
   http://www4.patents.ibm.com/servlet/ipaddr

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Also, Wil had this little backdoor for copying files from www4,

For example,
  http://www4.patents.ibm.com/servlet/fetchfile?file=D:\notes\data\keyfile.kyr
                                                                      and .sth