203.235.144.0/20 covers 203.235.144.0 to 203.235.159.255, 4,096 IPv4 addresses. It is announced by AS9848 (Sejong Telecom Co., Ltd.). Every sampled address geolocates to South Korea, with 94% in Gwacheon-si. It is registered to a hosting or cloud provider. None of the sampled addresses are flagged as VPN, proxy or Tor.