166.204.0.0/20

ip:	166.204.0.0 mobile-166-204-000-000.mycingular.net
loc:	United States, New York (New York)  
isp:	AS20057 AT&T Enterprises, LLC » AT&T Enterprises, LLC » AT&T Enterprises, LLC 171.262 ms
route:	166.204.0.0/20, AEL-360 - AT&T Enterprises, LLC, US (Dallas (Dallas Downtown Historic District)) ... 
reg:	166.192.0.0/12, US, ARIN, 2025-04-01
asn:	AS20057 - ATT-MOBILITY-LLC-AS20057 AT&T Wireless Service, US
	  AS7018  - ATT-INTERNET4 AT&T Enterprises, LLC, US
addr:	  5302 HARRY HINES BLVD Dallas TX 75235 US

see also:
   166.204.0.0/17   AS20057  AEL-360 AT&T Enterprises, LLC, US