Vendor name: ESSYS

MAC Prefix: A8:B9:B3

MAC Range: A8:B9:B3:00:00:00 - A8:B9:B3:FF:FF:FF

Type: MA-L

Address: Daerung Post Tower 5 15F
　　　　　Seoul Gasan-Dong, Geumchen-gu 153-702
　　　　　 KR