220.146.0.0/16 covers 220.146.0.0 to 220.146.255.255, 65,536 IPv4 addresses. It is announced by AS4685 (Asahi Net, Inc.). Every sampled address geolocates to Japan, with 34% in Tokyo. It is registered to an internet service provider. None of the sampled addresses are flagged as VPN, proxy or Tor.