72.128.0.0/13

ip:	72.128.0.0 syn-072-128-000-000.res.spectrum.com
loc:	United States, Kansas City (Kansas)  
isp:	AS11427 Charter Communications Inc » Spectrum » Road Runner 144.002 ms
route:	72.128.0.0/13, CC-3517 - Charter Communications Inc, US (Garland) ... 
reg:	72.128.0.0/13, US, ARIN, 2005-08-02
addr:	  6175 S. Willow Dr Greenwood Village CO 80111 US
online:	  193.123 » latency: 190 ms (202ms) 

see also:
   72.128.0.0/16    AS10796  RRWE Charter Communications Inc, US
   72.128.0.0/18    AS11427  RRWE Charter Communications Inc, US
   72.128.64.0/18   AS10796  RRWE Charter Communications Inc, US
   72.128.128.0/19  AS11427  NEXVORTEX-INC NEXVORTEX, INC, US
   72.128.160.0/19  AS10796  RRWE Charter Communications Inc, US
   72.128.192.0/19  AS10796  RRWE Charter Communications Inc, US
   72.128.224.0/20  AS10796  RRWE Charter Communications Inc, US
   72.128.240.0/20  AS10796  RRWE Charter Communications Inc, US
   72.129.0.0/17    AS20001  RRWE Charter Communications Inc, US
   72.129.42.0/23   AS10838  RRWE Charter Communications Inc, US
   72.129.128.0/19  AS10796  RRWE Charter Communications Inc, US
   72.129.160.0/19  AS11427  RRWE Charter Communications Inc, US
   72.129.192.0/19  AS7843   RRWE Charter Communications Inc, US
   72.129.192.0/24  AS8052   RRWE Charter Communications Inc, US
   72.129.208.0/21  AS8052   RRWE Charter Communications Inc, US
   72.129.220.0/24  AS7843   RRWE Charter Communications Inc, US
   72.129.222.0/24  AS8052   RRWE Charter Communications Inc, US
   72.129.223.0/24  AS8052   RRWE Charter Communications Inc, US
   72.129.224.0/19  AS11427  RRWE Charter Communications Inc, US