[{"mac_prefix":"00:00:81","mask_bits":24,"block_type":"MA-L","organization":"Bay Networks","address":"PO Box 58185 Santa Clara CA US 95052-8185","country":"US"},{"mac_prefix":"00:00:A2","mask_bits":24,"block_type":"MA-L","organization":"Bay Networks","address":"PO Box 58185 Santa Clara CA US 95052-8185","country":"US"},{"mac_prefix":"00:E0:7B","mask_bits":24,"block_type":"MA-L","organization":"BAY NETWORKS","address":"125 NAGOG PARK ACTON MA US 01720","country":"US"}]