18.148.0.0/16 covers 18.148.0.0 to 18.148.255.255, 65,536 IPv4 addresses. It is announced by AS16509 (Amazon.com, Inc.). Every sampled address geolocates to United States, with 100% in Seattle. It is registered to a business. None of the sampled addresses are flagged as VPN, proxy or Tor.