[{"mac_prefix":"8C:51:09:00","mask_bits":28,"block_type":"MA-M","organization":"TianJin JointOptic Technology Co., LTD.","address":"Floor 3, Building 6, Teda Service Outsourcing Industrial Park, 19 Xinhuan West Road, Binhai New Area,  Tianjin  CN 300000","country":"CN"}]