[{"mac_prefix":"00:50:C2:10:90","mask_bits":36,"block_type":"IAB","organization":"ITK Dr. Kassen GmbH","address":"Beim Eberacker 3 D-35633 Lahnau  DE","country":"DE"},{"mac_prefix":"70:B3:D5:58:A0","mask_bits":36,"block_type":"MA-S","organization":"ITK Dr. Kassen GmbH","address":"Beim Eberacker 3 D-35633 Lahnau  DE","country":"DE"}]