12.4.0.0/16 covers 12.4.0.0 to 12.4.255.255, 65,536 IPv4 addresses. It is announced by AS7018 (AT&T Enterprises, LLC). Every sampled address geolocates to United States, with 31% in Washington. 91% of it is registered to an internet service provider. None of the sampled addresses are flagged as VPN, proxy or Tor.