216.56.0.0/16

ip:	216.56.0.0 
loc:	United States, Brookfield (Wisconsin)  
isp:	AS2381 WiscNet » WiscNet » WiscNet 641.077 ms
route:	216.56.0.0/16, WISC - WiscNet, US (Milwaukee) ... 
reg:	216.56.0.0/16, US, ARIN, 1998-08-26
asn:	AS2381 - WISCNET1-AS WiscNet, US
	  AS11164 - INTERNET2-I2PX Internet2, US
	  AS3257  - GTT-BACKBONE GTT, US
	  AS6939  - HURRICANE Hurricane Electric LLC, US
	  AS1299  - TWELVE99 Arelion, f/k/a Telia Carrier, SE
addr:	  605 Science Drive Madison WI 53711 US
online:	  1.480 » latency: 121 ms (128ms) 

see also:
   216.56.252.0/23  AS2381   WISCNET-BLOCK3 WiscNet, US