107.91.0.0/17

ip:	107.91.0.0 
loc:	United States, Las Vegas (Nevada)  
isp:	AS20057 AT&T Enterprises, LLC » AT&T Enterprises, LLC » AT&T Enterprises, LLC 554.893 ms
route:	107.91.0.0/17, ATT-MOBILITY-LLC - AT&T Enterprises, LLC, US (New York) ... 
reg:	107.64.0.0/10, US, ARIN, 2011-02-04
asn:	AS20057 - ATT-MOBILITY-LLC-AS20057 AT&T Wireless Service, US
	  AS7018  - ATT-INTERNET4 AT&T Enterprises, LLC, US
addr:	  208 S. Akard St. Dallas TX 75202 US
online:	  167 » latency: 292 ms (281ms) 

see also:
   107.64.0.0/10    AS7018   ATT-MOBILITY-LLC AT&T Enterprises, LLC, US