Headers of http://www.checkheaders.com/

HTTP/1.1 200 OK
Date
Fri, 02 Apr 2021 01:11:26 GMT
Server
Apache
Upgrade
h2
Connection
Upgrade, close
Cache-Control
max-age=600
Expires
Fri, 02 Apr 2021 01:21:26 GMT
Vary
Accept-Encoding,User-Agent
Content-Length
5070
Content-Type
text/html; charset=UTF-8