[{"mac_prefix":"70:B3:D5:07:90","mask_bits":36,"block_type":"MA-S","organization":"CheckBill Co,Ltd.","address":"jiksan-eup, Seobuk-gu 28, 4sandan 5-gil Cheonan-si Chungcheongnam-do KR 331-814","country":"KR"},{"mac_prefix":"70:B3:D5:94:70","mask_bits":36,"block_type":"MA-S","organization":"Checkbill Co,Ltd.","address":"3306~7-ho, Beonyeonggwan, Chungnam Techno Park, 136, Jiksan-ro, Jiksan-eup, Seobuk-gu Cheonan-si Chungcheongnam-do  KR 31035","country":"KR"}]