52.129.16.0/22

ip:	52.129.16.0 
loc:	United States, Detroit (Michigan)  
isp:	AS40089 Bullhorn Inc. » Bullhorn Inc. » Bullhorn Inc 0.279 ms
route:	52.129.16.0/22, BULLH-1 - Bullhorn Inc., US (Grand Rapids) ... 
reg:	52.129.16.0/22, US, ARIN, 2017-09-28
addr:	  Bullhorn Inc. 100 Summer Street Boston MA 2210 US
online:	  105 » latency: 130 ms (130ms) 

see also:
   52.129.16.0/24   AS40089  BULLH-1 Bullhorn Inc., US
   52.129.17.0/24   AS40089  BULLH-1 Bullhorn Inc., US
   52.129.18.0/24   AS40089  BULLH-1 Bullhorn Inc., US
   52.129.19.0/24   AS40089  BULLH-1 Bullhorn Inc., US