217.204.144.0/20 covers 217.204.144.0 to 217.204.159.255, 4,096 IPv4 addresses. It is announced by AS3257 (GTT Communications, Inc.). Every sampled address geolocates to Germany, with 100% in Frankfurt. It is registered to an internet service provider. None of the sampled addresses are flagged as VPN, proxy or Tor.