[{"mac_prefix":"00:1C:47","mask_bits":24,"block_type":"MA-L","organization":"Hangzhou Hollysys Automation Co., Ltd","address":"No.10 Middle Road, Jiancaicheng, Haidian District, Beijing  CN 100096","country":"CN"},{"mac_prefix":"90:88:A9:30","mask_bits":28,"block_type":"MA-M","organization":"Hangzhou Hollysys Automation Co., Ltd","address":"No. 12, Baiyang Street, Qiantang District, Hangzhou City, Zhejiang Province Hangzhou Zhejiang  CN 310000","country":"CN"}]