[{"mac_prefix":"B0:1F:81:50","mask_bits":28,"block_type":"MA-M","organization":"SHENZHEN GRID TECHNOLOGY CO.,LTD","address":"6thfloor,jinda Technology Center,No.8 of kefeng Road ,Science and Technology Park,NanshanDist,Shenzhen shenzhen guangdong CN 518054","country":"CN"}]