[{"mac_prefix":"D0:76:50:C0","mask_bits":28,"block_type":"MA-M","organization":"Electro-Motive Diesel","address":"9301 W. 55th Street La Grange IL US 60525","country":"US"},{"mac_prefix":"00:50:C2:F2:30","mask_bits":36,"block_type":"IAB","organization":"Electro-Motive Diesel","address":"9301 West 55th Street LaGrange IL US 60525","country":"US"}]