[{"mac_prefix":"00:00:6F","mask_bits":24,"block_type":"MA-L","organization":"Madge Ltd.","address":"Madge House Maindenhead Berkshire GB SL6 2HP","country":"GB"},{"mac_prefix":"00:00:C1","mask_bits":24,"block_type":"MA-L","organization":"Madge Ltd.","address":"Madge House Maindenhead Berkshire GB SL6 2HP","country":"GB"},{"mac_prefix":"00:02:81","mask_bits":24,"block_type":"MA-L","organization":"Madge Ltd.","address":"Madge House Maindenhead Berkshire GB SL6 2HP","country":"GB"},{"mac_prefix":"00:80:E9","mask_bits":24,"block_type":"MA-L","organization":"Madge Ltd.","address":"Madge House Maindenhead Berkshire GB SL6 2HP","country":"GB"}]