[{"mac_prefix":"74:5B:C5:90","mask_bits":28,"block_type":"MA-M","organization":"Haikou Frun Flash\u0026Mcu Microcontrol Technology Development Co.,Ltd","address":"5 floor A1-9, A building, incubation center, Haikou national hi tech Development Zone Haikou Hainan CN 570206","country":"CN"}]