whois 5lcxsn6uwi.execute-api.us-east-1.amazonaws.com/dev/imageResize?key=68747470733A2F2F7777772E746F64617973706172656E742E636F6D2F3F703D/auto/315.jpg

Domain:
Turn off cache
Try for webbased whois (don't expect it to work yet)
5lcxsn6uwi.execute-api.us-east-1.amazonaws.com/dev/imageResize?key=68747470733A2F2F7777772E746F64617973706172656E742E636F6D2F3F703D/auto/315.jpg
checking....5lcxsn6uwi.execute-api.us-east-1.amazonaws.com/dev/imageResize?key=68747470733A2F2F7777772E746F64617973706172656E742E636F6D2F3F703D/auto/315.jpg
   $ whois 5lcxsn6uwi.execute-api.us-east-1.amazonaws.com/dev/imageResize?key=68747470733A2F2F7777772E746F64617973706172656E742E636F6D2F3F703D/auto/315.jpg
No whois server is known for this kind of object.