136.57.48.0/20

ip:	136.57.48.0 136-57-48-0.googlefiber.net
loc:	United States, Concord (North Carolina)  
isp:	AS16591 Google Fiber Inc. » Google Fiber Inc. » Google Fiber Inc 310.386 ms
route:	136.57.48.0/20, GFIBER-V4 - Google Fiber Inc., US (Charlotte) ... 
reg:	136.32.0.0/11, US, ARIN, 2015-10-06
asn:	AS16591 - GOOGLE-FIBER Google Fiber Inc., US
	  AS3356  - LEVEL3 Level 3 Parent, LLC, US
addr:	  1600 Amphitheatre Parkway Mountain View CA 94043 US
online:	  1.673 » latency: 123 ms (126ms) 

see also:
   136.32.0.0/11    AS16591  GOOGLE-FIBER Google Fiber Inc., US