If you are not sure if the website you want to visit is safe, you can check it out here. Enter the address (url) of the website and see the invisible elements, such as a header or meta data.
site address:syndication.exosrv.com/ads-iframe-display.php?idzone=2297153&output=img&type=300x25...
site title:

Header

HTTP/1.1 200 OK
Server nginx
Date Thu, 27 Feb 2020 22:52:19 GMT
Content-Type text/html; charset=UTF-8
Transfer-Encoding chunked
Connection keep-alive
Expires Mon, 26 Jul 1997 05:00:00 GMT
Cache-Control no-cache, must-revalidate
Pragma no-cache
P3P CP= IDC DSP COR ADM DEVi TAIi PSA PSD IVAi IVDi CONi HIS OUR IND CNT
Set-Cookie __uvt=a%3A1%3A%7Bi%3A0%3Bs%3A33%3A%225e584823253eb6.380838102408098753%22%3B%7D; expires=Sat, 26 Feb 2022 22:52:19 GMT; path=; domain=.exosrv.com;
Content-Encoding gzip

Load Info

page size20
load time (s)0.02046
redirect count0
speed download977
server IP95.211.229.247


* all occurrences of the string "http://" have been changed to "htt???/"