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:daotao.vnua.edu.vn/App_Themes/Standard/Images/US.gi...
favicon.ico:
URL does not point to a web page (html/xhtml) or read error or page not found. (5002)

Header

HTTP/1.1 200 OK
Content-Type image/gif
Last-Modified Thu, 06 Feb 2020 04:40:48 GMT
Accept-Ranges bytes
ETag 0c8149aa7dcd51:0
Server Microsoft-IIS/10.0
X-Powered-By ASP.NET
Access-Control-Allow-Origin htt???/daotao.vnua.edu.vn
Date Fri, 07 May 2021 02:31:22 GMT
Content-Length 1111

Load Info

page size1111
load time (s)5.001144
redirect count0
speed download222
server IP220.231.107.130


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