Age HTTP Header - Original Server Response

   The Age header contains the time in seconds the object has been in a proxy cache.

Character Encoding :us-ascii

   This website is using us-ascii character encoding in HTML , character encoding is used to represent a repertoire of characters by some kind of encoding system.

Varnish

   Varnish is an HTTP accelerator designed for content-heavy dynamic web sites as well as APIs. In contrast to other web accelerators, such as Squid, which began life as a client-side cache, or Apache and nginx, which are primarily origin servers, Varnish was designed as an HTTP accelerator.

Server partial requests support

   The Accept-Ranges response HTTP header is a marker used by the server to advertise its support of partial requests. The value of this field indicates the unit that can be used to define a range.