[{"mac_prefix":"00:C0:7B","mask_bits":24,"block_type":"MA-L","organization":"ASCEND COMMUNICATIONS, INC.","address":"1701 HARBOR BAY PARKWAY ALAMEDA CA US 94502","country":"US"},{"mac_prefix":"00:D0:52","mask_bits":24,"block_type":"MA-L","organization":"ASCEND COMMUNICATIONS, INC.","address":"1701 HARBOR BAY PARKWAY ALAMEDA CA US 94502","country":"US"}]