[{"mac_prefix":"20:0A:0D:90","mask_bits":28,"block_type":"MA-M","organization":"Welzek (Beijing) Technologies  Co, Ltd","address":"No 201,Building 12, Chaolai Science Park, No.36 Chuangyuan RoadLaiguangying, Chaoyang Disctrict Beijing Beijing CN 100012","country":"CN"}]