[{"mac_prefix":"00:30:D0","mask_bits":24,"block_type":"MA-L","organization":"Tellabs","address":"1750 Founder's Parkway Alpharetta GA US 30004","country":"US"},{"mac_prefix":"70:DD:A1","mask_bits":24,"block_type":"MA-L","organization":"Tellabs","address":"One Tellabs Center Naperville Illinois US 60563","country":"US"}]