210.121.0.0 - 210.121.127.255 (HANQ) Hansol Telecom Co., Ltd.; 15th Fl. Hansol PCS Bldg. 1321-11 Seochodong; Seochoku Seoul Korea; 135-070; KR 210.121.128.0 - 210.121.255.255 (KORNET) Korea Telecom; 100 Sejong-no Chongno-gu Seoul, Korea; 110-777; KR