220.158.0.0/20 covers 220.158.0.0 to 220.158.15.255, 4,096 IPv4 addresses. It is announced by AS2519 (ARTERIA Networks Corporation). Every sampled address geolocates to Japan, with 56% in Tokyo. It is registered to an internet service provider. None of the sampled addresses are flagged as VPN, proxy or Tor.