143.166.0.0/16

ip:	143.166.0.0 
loc:	United States, Round Rock (Texas)  
isp:	AS3614 Dell, Inc. » Dell, Inc. » Dell, Inc. 142.491 ms
route:	143.166.0.0/16, DELL - Dell, Inc., US (Austin) ... 
reg:	143.166.0.0/16, US, ARIN, 1990-09-26
asn:	AS3614 - DELL-BLK Dell Inc., US
	  AS701   - UUNET Verizon Business, US
	  AS7018  - ATT-INTERNET4 AT&T Enterprises, LLC, US
	  AS6461  - ZAYO-6461 Zayo Bandwidth, US
addr:	  One Dell Way Round Rock TX 78682 US
online:	  341 » latency: 144 ms (142ms) 

see also:
   143.166.81.0/24  AS3614   DELL Dell, Inc., US
   143.166.200.0/21 AS3614   DELL Dell, Inc., US
   143.166.206.0/24 AS3614   DELL Dell, Inc., US
   143.166.208.0/21 AS3614   DELL Dell, Inc., US
   143.166.210.0/24 AS3614   DELL Dell, Inc., US
   143.166.253.0/24 AS3614   DELL Dell, Inc., US