3.5.188.0/23

ip:	3.5.188.0 s3.ap-northeast-2.amazonaws.com
loc:	South Korea, Seoul (Seoul)  
isp:	AS16509 Amazon.com, Inc. » Amazon Technologies Inc. » AWS EC2 (ap-northeast-2) 286.474 ms
route:	3.5.188.0/23, AMAZON-S3 - Amazon Data Services Northern Virginia, US (Seoul) ... 
reg:	3.0.0.0/9, US, ARIN, 2017-12-20
asn:	AS16509 - AMAZON-02 Amazon.com Inc., US
addr:	  13200 Woodland Park Road Herndon VA 20171 US
online:	  185 » latency: 285 ms (285ms) 

see also:
   3.0.0.0/10       AS16509  AT-88-Z Amazon Technologies Inc., US
   3.5.184.0/21     AS16509  AMAZON-S3 Amazon Data Services Northern Virginia, KR