166.131.236.0/24

ip:	166.131.236.0 mobile-166-131-236-0.mycingular.net
loc:	United States, Hudson (Massachusetts)  
isp:	AS20057 AT&T Enterprises, LLC » AT&T Enterprises, LLC » AT&T Enterprises, LLC 163.993 ms
route:	166.131.236.0/24, AEL-360 - AT&T Enterprises, LLC, US (New York) ... 
reg:	166.128.0.0/13, 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:	  208 S. Akard St. Dallas TX 75202 US

see also:
   166.128.0.0/14   AS20057  AEL-360 AT&T Enterprises, LLC, US
   166.131.0.0/16   AS20057  NETBLK-CDPD-B Wireless Data Service Provider Corporation, US