[{"mac_prefix":"E4:4C:C7:20","mask_bits":28,"block_type":"MA-M","organization":"Doowon Electronics \u0026 Telecom Co.,Ltd","address":"IT 301-408, Ssangyong 3Cha, Bucheon Technopark, 397, Seokcheon-ro, Ojeong-gu Bucheon-si Gyeonggi-do KR 14449","country":"KR"}]