[{"mac_prefix":"00:1F:47","mask_bits":24,"block_type":"MA-L","organization":"MCS Logic Inc.","address":"6F. Samho Center B Bldg., 275-6 Seoul  KR 137-941","country":"KR"},{"mac_prefix":"08:EF:3B","mask_bits":24,"block_type":"MA-L","organization":"MCS Logic Inc.","address":"6F. Samho Center B Bldg., 275-6,Yangjae-Dong, Secho-Ku,Seoul Seoul  KR 137-941","country":"KR"},{"mac_prefix":"54:15:89","mask_bits":24,"block_type":"MA-L","organization":"MCS Logic Inc.","address":"A-1701, Munjeong-dong, SK V1 GL Metro City, 128, Beobwon-ro, Songpa-gu,  seoul seoul KR 05854","country":"KR"},{"mac_prefix":"C4:30:18","mask_bits":24,"block_type":"MA-L","organization":"MCS Logic Inc.","address":"6F. Samho Center B Bldg., 275-6,Yangjae-Dong, Secho-Ku,Seoul Seoul  KR 137-941","country":"KR"}]