[{"mac_prefix":"B4:AB:F3:E0","mask_bits":28,"block_type":"MA-M","organization":"RANG DONG LIGHT SOURCE \u0026 VACUUM FLASK J.S.C","address":"87 - 89 Ha Dinh Str, Khuong Dinh Ward, Hanoi , Vietnam Hanoi  VN 10000","country":"VN"}]