$mech->request(POST 'https://netinfo.ti.citigroup.net/NOTIS/IPAllocation/IPAllocNetsUploadProcess.asp',
       Content_Type => 'form-data',
       Content      => ["file1" => ["C:/Scripting/Upload/10.26.0.0.csv" => "10.26.0.0.csv" => "application/vnd.ms-excel"],
                        "submit2" => "Upload",
                       ]);

print $mech->content;