3.44.128.0/18

ip:	3.44.128.0 ec2-3-44-128-0.ap-northeast-1.compute.amazonaws.com
loc:	Japan, Tokyo (Tokyo)  
isp:	AS16509 Amazon.com, Inc. » Amazon.com, Inc. » AWS EC2 (ap-northeast-1) 525.326 ms
route:	3.44.128.0/18, AT-88-Z - Amazon Technologies Inc., JP (Tokyo) ... 
reg:	3.0.0.0/9, US, ARIN, 2017-12-20
asn:	AS16509 - AMAZON-02 Amazon.com Inc., US
addr:	  
online:	  109 » latency: 253 ms (253ms) 

see also:
   3.0.0.0/10       AS16509  AT-88-Z Amazon Technologies Inc., US