[{"mac_prefix":"00:50:C2:C7:90","mask_bits":36,"block_type":"IAB","organization":"CODESYSTEM Co.,Ltd","address":"#705 Ace Techno Tower-9th 345-30 Seoul  KR 153-802","country":"KR"},{"mac_prefix":"70:B3:D5:FC:00","mask_bits":36,"block_type":"MA-S","organization":"CODESYSTEM Co.,Ltd","address":"#705, Namsung Plaza(Ace9), 130 Digitalro, Keumchon-Gu Seoul  KR 08589","country":"KR"}]