120.133.240.0/20 covers 120.133.240.0 to 120.133.255.255, 4,096 IPv4 addresses. It is announced by AS17428 (21Vianet.Co.,Ltd). Every sampled address geolocates to China, with 100% in Shanghai. It is registered to a business. None of the sampled addresses are flagged as VPN, proxy or Tor.