[{"mac_prefix":"00:50:C2:2A:30","mask_bits":36,"block_type":"IAB","organization":"West-Com Nurse Call Systems, Inc.","address":"PO Box 640 Danville CA US 94526","country":"US"},{"mac_prefix":"00:50:C2:EB:A0","mask_bits":36,"block_type":"IAB","organization":"West-Com Nurse Call Systems, Inc.","address":"2200 Cordelia Road Fairfield CA US 94534","country":"US"},{"mac_prefix":"70:B3:D5:AA:80","mask_bits":36,"block_type":"MA-S","organization":"West-Com Nurse Call Systems, Inc.","address":"2200 Cordelia Road Fairfield CA US 94534","country":"US"}]