The following lines show what could be stored while visiting any website
And this is just a small example of what is possible
We at Openaddressdata.org do NOT store this information AT ALL

Your IP address is: 54.145.103.69
Your host name is: ec2-54-145-103-69.compute-1.amazonaws.com

Content-Length: 0
Connection: close
If-Modified-Since: Wed, 25 Apr 2018 16:17:46 GMT
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
User-Agent: CCBot/2.0 (http://commoncrawl.org/faq/)
Accept-Encoding: x-gzip, gzip, deflate
Host: openaddressdata.eu