Facebook

Facebook Usage Statistics · Download List of All Websites using Facebook

The website mentions facebook.com in some form.

Twitter

Twitter Usage Statistics · Download List of All Websites using Twitter

The website mentions twitter.com in some form.

Cogent Communications

Cogent Communications Usage Statistics · Download List of All Websites using Cogent Communications

Colocation and dedicated IP hosting system.

Dedicated Hosting · US hosting

U.S. Server Location

U.S. Server Location Usage Statistics · Download List of All Websites using U.S. Server Location

The web server is located in the United States.

Server Location

SPF

SPF Usage Statistics · Download List of All Websites using SPF

The Sender Policy Framework is an open standard specifying a technical method to prevent sender address forgery.

LetsEncrypt

LetsEncrypt Usage Statistics · Download List of All Websites using LetsEncrypt

Let’s Encrypt is a free open Certificate Authority.

Root Authority

OpenSSL

OpenSSL Usage Statistics · Download List of All Websites using OpenSSL

The OpenSSL Project is a collaborative effort to develop a robust, commercial-grade, full-featured, and Open Source toolkit implementing the Secure Sockets Layer (SSL v2/v3) and Transport Layer Security (TLS v1) protocols as well as a full-strength general purpose cryptography library.

Limiter Modules

Limiter Modules Usage Statistics · Download List of All Websites using Limiter Modules

Log Byte and Bandwidth Limiter modules.

Apache

Apache Usage Statistics · Download List of All Websites using Apache

Apache has been the most popular web server on the Internet since April 1996.