Meta Description

   A meta description is a 160-character snippet, a meta tag in HTML, that summarizes a page`s content. this website is having meta description of the following : 無料ホームページのTOK2は、容量無制限・商用無制限で、PHP・CGI ・FTP・ファイルマネージャーまで使えます。さらに、ブログ感覚でHPができるTOK2 CMSも加わって超お得なホームページポータルサイトです。有料レンタルサーバも充実：月額２００円！

SPF

   The Sender Policy Framework (SPF) is an email-authentication technique which is used to prevent spammers from sending messages on behalf of your domain. With SPF an organisation can publish authorized mail servers.

PHP 3.0.18

   PHP: Hypertext Preprocessor is a general-purpose programming language originally designed for web development.

Facebook SDK

   The Facebook SDK for JavaScript provides a rich set of client-side functionality

Nginx 1.21.0

   Nginx is a web server which can also be used as a reverse proxy, load balancer, mail proxy and HTTP cache. The software was created by Igor Sysoev and first publicly released in 2004. A company of the same name was founded in 2011 to provide support and Nginx plus paid software.

Chunked transfer encoding

   Chunked transfer encoding is a streaming data transfer mechanism available in version 1.1 of the Hypertext Transfer Protocol (HTTP). In chunked transfer encoding, the data stream is divided into a series of non-overlapping "chunks"