[{"mac_prefix":"8C:C8:F4:00","mask_bits":28,"block_type":"MA-M","organization":"Guardtec,Inc","address":"Hanshin IT tower #1203 Digital-ro 272 GUROGU SEOUL  KR 08389","country":"KR"},{"mac_prefix":"00:50:C2:D0:90","mask_bits":36,"block_type":"IAB","organization":"Guardtec,Inc","address":"#1203, Hansin IT Tower, 235, Seoul  KR 152-768","country":"KR"}]