Host-Header

The host Header tells the webserver which virtual host to use (if set up). You can even have the same virtual host using several aliases (= domains and wildcard-domains). In this case you still have the possibility to read that header manually in your web app if you want to provide different behavior based on different domains addressed.

Header usage statistics

Host-Header response header information and usage statistics.

Websites using header Host-Header	2,229,366
Percentage of websites that use Host-Header header	2.21%
Total discovered header values	14
Header uses directives	No
Header values are unique or random	No
Most popular in the country	US