[{"mac_prefix":"F4:97:9D:00","mask_bits":28,"block_type":"MA-M","organization":"Tardis Technology","address":"2-30, Maenser Space, 145 Shindae-ro Jejusi Jejudo KR 63134","country":"KR"},{"mac_prefix":"8C:1F:64:C0:60","mask_bits":36,"block_type":"MA-S","organization":"Tardis Technology","address":"A-3 Fl. KAIST Center, 330 Chumdan-Ro  Jejusi Jejudo KR 63309","country":"KR"}]