155.170.0.0/16

ip:	155.170.0.0 nothing.attdns.com
loc:	United States, Atlanta (Georgia)  
isp:	AS20057 AT&T Enterprises, LLC » AT&T Enterprises, LLC » AT&T Mobility LLC 773.433 ms
route:	155.170.0.0/16, AEL-360 - AT&T Enterprises, LLC, US (New York) ... 
reg:	155.170.0.0/16, US, ARIN, 1992-03-24
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:	  103 » latency: 250 ms (251ms) 

see also:
   155.170.0.0/17   AS20057  ATT-MOBILITY-LLC-155-170-0-0 AT&T Enterprises, LLC, US
   155.170.122.0/23 AS20057  ATT-MOBILITY-LLC-155-170-0-0 AT&T Enterprises, LLC, US
   155.170.124.0/24 AS20057  ATT-MOBILITY-LLC-155-170-0-0 AT&T Enterprises, LLC, US
   155.170.128.0/17 AS20057  ATT-MOBILITY-LLC-155-170-0-0 AT&T Enterprises, LLC, US