3.173.170.0/23

ip:	3.173.170.0 server-3-173-170-0.man51.r.cloudfront.net
loc:	United Kingdom, Manchester (England)  
isp:	AS16509 Amazon.com, Inc. » Amazon.com, Inc. » AWS CloudFront (GLOBAL) 405.293 ms
route:	3.173.170.0/23, AT-88-Z - Amazon Technologies Inc., US ... 
reg:	3.128.0.0/9, US, ARIN, 2018-06-25
asn:	AS16509 - AMAZON-02 Amazon.com Inc., US
addr:	  
online:	  496 » latency: 44 ms (44ms) 

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