[{"mac_prefix":"20:0A:0D:00","mask_bits":28,"block_type":"MA-M","organization":"halstrup-walcher GmbH","address":"Stegener Straße 10 Kirchzarten  DE 79199","country":"DE"},{"mac_prefix":"B4:4D:43:50","mask_bits":28,"block_type":"MA-M","organization":"halstrup-walcher GmbH","address":"Stegener Straße 10 Kirchzarten  DE 79199","country":"DE"}]