180.131.224.0/19 covers 180.131.224.0 to 180.131.255.255, 8,192 IPv4 addresses. It is announced by AS55900 (GLBB Japan KK). Every sampled address geolocates to Japan, with 25% in Misawa. It is registered to a business. None of the sampled addresses are flagged as VPN, proxy or Tor.