[{"mac_prefix":"A4:61:77","mask_bits":24,"block_type":"MA-L","organization":"AMOSENSE","address":"Narutu street 56 SEOUL Sucho gu KR 06527","country":"KR"},{"mac_prefix":"D0:56:BF","mask_bits":24,"block_type":"MA-L","organization":"AMOSENSE","address":"Narutu street 56 SEOUL Sucho gu KR 06527","country":"KR"}]