[{"mac_prefix":"44:A9:2C:90","mask_bits":28,"block_type":"MA-M","organization":"China Electronics Corporation Greatwall Shengfeifan information system Co.,ltd. Hu'nan computer R.\u0026D. Center","address":"China Electronics Software Park,Yuelu District,Changsha City,Hunan Province Changsha  CN 410013","country":"CN"}]