3.166.208.0/21

ip:	3.166.208.0 server-3-166-208-0.nrt20.r.cloudfront.net
loc:	Japan, Chiyoda City (Tokyo)  
isp:	AS16509 Amazon.com, Inc. » Amazon.com, Inc. » AWS CloudFront (GLOBAL) 265.659 ms
route:	3.166.208.0/21, AMAZON-CF - Amazon.com, Inc., US (Chiyoda) ... 
reg:	3.128.0.0/9, US, ARIN, 2018-06-25
asn:	AS16509 - AMAZON-02 Amazon.com Inc., US
addr:	  1918 8th Ave SEATTLE WA 98101-1244 US
online:	  2.005 » latency: 257 ms (260ms) 

see also:
   3.128.0.0/10     AS16509  AT-88-Z Amazon Technologies Inc., US