210.237.0.0/16 covers 210.237.0.0 to 210.237.255.255, 65,536 IPv4 addresses. It is announced by AS4725 (SoftBank Corp.) and 3 other networks. Every sampled address geolocates to Japan, with 50% in Chiyoda City. 88% of it is registered to an internet service provider. None of the sampled addresses are flagged as VPN, proxy or Tor.