[{"mac_prefix":"90:15:64:A0","mask_bits":28,"block_type":"MA-M","organization":"Bunka Shutter Co., Ltd.","address":"644-1 Kamiishizuka, Oyama, Tochigi, Japan Oyama Tochigi JP 3230063","country":"JP"},{"mac_prefix":"70:B3:D5:5A:90","mask_bits":36,"block_type":"MA-S","organization":"Bunka Shutter Co., Ltd.","address":"644-1 Tenjingoe,Ooaza-Kamiishizuka Oyama Tochigi JP 323-0063","country":"JP"},{"mac_prefix":"8C:1F:64:0B:00","mask_bits":36,"block_type":"MA-S","organization":"Bunka Shutter Co., Ltd.","address":"644-1 Tenjingoe,Ooaza-Kamiishizuka Oyama Tochigi JP 323-0063","country":"JP"}]