[{"mac_prefix":"00:15:83","mask_bits":24,"block_type":"MA-L","organization":"IVT corporation","address":"Shangdi Xinxi road, Haidian District Beijing  US 100085","country":"US"},{"mac_prefix":"C0:FB:F9:60","mask_bits":28,"block_type":"MA-M","organization":"IVT corporation","address":"5/F, Zhongguancun Fazhan Building, No 12, Shangdi Xinxi Road, Haidian District, Beijing, 100085, P.R. CHINA Beijing  CN 100085","country":"CN"}]