addr: Network Research Center, , Main Bldg, Tsinghua Univ, Beijing 100084, China reg: CN, APNIC, 2015-04-29
115.25.209.0/24 BJR-CERNET China Education and Research Network, CN
uu: u4: u6: dd: 45090 d4: d6: 45090
AS4538 ➡️ ERX-CERNET-BKB China Education and Research Network Center, CN