35.71.64.0/18

ip:	35.71.64.0 dynamodb.us-west-2.amazonaws.com
loc:	United States, Portland (Oregon)  
isp:	AS16509 Amazon.com, Inc. » Amazon Technologies Inc. » AWS DynamoDB (us-west-2) 134.798 ms
route:	35.71.64.0/18, AMAZON-BYOIP - Amazon Data Services Northern Virginia, US (Boardman) ... 
reg:	35.71.64.0/18, US, ARIN, 2019-04-15
asn:	AS16509 - AMAZON-02 Amazon.com Inc., US
addr:	  410 Terry Ave N. Seattle WA 98109 US
online:	  726 » latency: 170 ms (190ms) 

see also:
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   35.71.76.0/22    AS14618  AMAZON-BYOIP Amazon Data Services Northern Virginia, US
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   35.71.97.0/24    AS16509  AMAZON-BYOIP Amazon Data Services Northern Virginia, US
   35.71.98.0/24    AS16509  AMAZON-BYOIP Amazon Data Services Northern Virginia, US
   35.71.100.0/24   AS16509  AMAZON-BYOIP Amazon Data Services Northern Virginia, US
   35.71.101.0/24   AS16509  AMAZON-BYOIP Amazon Data Services Northern Virginia, US
   35.71.102.0/24   AS16509  AMAZON-BYOIP Amazon Data Services Northern Virginia, US