75.172.0.0/16

ip:	75.172.0.0 
loc:	United States, Seattle (Washington)  
isp:	AS209 CenturyLink Communications, LLC » CenturyLink Communications, LLC » CenturyLink Communications, LLC 776.148 ms
route:	75.172.0.0/16, CENTURYLINK-LEGACY-QWEST-INET-124 - CenturyLink Communications, LLC, US (Tukwila) ... 
reg:	75.160.0.0/12, US, ARIN, 2006-10-24
asn:	AS209 - CENTURYLINK-US-LEGACY-QWEST CenturyLink Communications LLC, US
	  AS3356  - LEVEL3 Level 3 Parent, LLC, US
addr:	  100 CENTURYLINK DR Monroe LA 71201 US
online:	  34.779 » latency: 178 ms (277ms) 

see also:
   75.160.0.0/12    AS209    CENTURYLINK-LEGACY-QWEST-INET-124 CenturyLink Communications, LLC, US