16.18.0.0/16

ip:	16.18.0.0 ec2-16-18-0-0.eu-central-2.compute.amazonaws.com
loc:	Switzerland, Zurich (Zurich)  
isp:	AS16509 Amazon.com, Inc. » Amazon.com, Inc. » Amazon.com, Inc. 410.302 ms
route:	16.18.0.0/16, AMAZO-4 - Amazon.com, Inc., CH (Zurich) ... 
reg:	16.18.0.0/16, US, ARIN, 2021-04-28
asn:	AS16509 - AMAZON-02 Amazon.com Inc., US
addr:	  Amazon Web Services Inc. P.O. Box 81226 Seattle WA 98108-1226 US
online:	  145 » latency: 34 ms (35ms) 

see also:
   16.18.0.0/17     AS16509  AMAZO-4 Amazon.com, Inc., US
   16.18.128.0/17   AS16509  AMAZO-4 Amazon.com, Inc., US