172.64.64.0/20

ip:	172.64.64.0 
loc:	Canada, Montreal (Quebec)  
isp:	 » Cloudflare » Cloudflare, Inc. 342.903 ms
route:	172.64.64.0/20, CLOUDFLARENET - Cloudflare, Inc., CA (Montreal) ... 
reg:	172.64.0.0/13, US, ARIN, 2015-02-25
addr:	  101 Townsend Street San Francisco CA 94107 US
online:	  3.647 » latency: 46 ms (152ms) 

see also:
   172.64.66.0/24   AS13335  CLOUDFLARENET Cloudflare, Inc., US
   172.64.67.0/24   AS13335  CLOUDFLARENET Cloudflare, Inc., US
   172.64.68.0/24   AS13335  CLOUDFLARENET Cloudflare, Inc., US
   172.64.69.0/24   AS13335  CLOUDFLARENET Cloudflare, Inc., US
   172.64.72.0/24   AS13335  CLOUDFLARENET Cloudflare, Inc., US
   172.64.74.0/24   AS13335  CLOUDFLARENET Cloudflare, Inc., US
   172.64.75.0/24   AS13335  CLOUDFLARENET Cloudflare, Inc., US
   172.64.76.0/24   AS13335  CLOUDFLARENET Cloudflare, Inc., US
   172.64.77.0/24   AS13335  CLOUDFLARENET Cloudflare, Inc., US
   172.64.78.0/24   AS13335  CLOUDFLARENET Cloudflare, Inc., US
   172.64.79.0/24   AS13335  CLOUDFLARENET Cloudflare, Inc., US