[{"mac_prefix":"D4:20:00:B0","mask_bits":28,"block_type":"MA-M","organization":"Shenzhen Volt IoT technology co.,ltd.","address":"Room 902, Building B, Industry-University-Research Building, Wuhan University, Yuehai Street, Nanshan District, Shenzhen Shenzhen guangdong CN 518054","country":"CN"}]