[{"mac_prefix":"50:19:11:50","mask_bits":28,"block_type":"MA-M","organization":"Shenzhen COI Technology Co.,LTD","address":"Room 406,B Building,SIBIONO BUILDING,19,1st Science \u0026 Technology Middle Road, Nanshan district, Shenzhen,China Shenzhen Shenzhen CN 51800","country":"CN"}]