18.164.4.0/22

ip:	18.164.4.0 server-18-164-4-0.lim50.r.cloudfront.net
loc:	Peru, Lima (Lima Province)  
isp:	AS16509 Amazon.com, Inc. » Amazon.com, Inc. » AWS CloudFront (GLOBAL) 415.841 ms
route:	18.164.4.0/22, AMAZON-CF - Amazon.com, Inc., US ... 
reg:	18.128.0.0/9, US, ARIN, 2019-10-07
asn:	AS16509 - AMAZON-02 Amazon.com Inc., US
addr:	  
online:	  953 » latency: 233 ms (229ms) 

see also:
   18.164.0.0/14    AS16509  AMAZON-CF Amazon.com, Inc., US