ASTROGRAPH.APP

GitHub

GitHub Usage Statistics · Download List of All Websites using GitHub

The website mentions github.com in some form.

SSL by Default

SSL by Default Usage Statistics · Download List of All Websites using SSL by Default

The website redirects traffic to an HTTPS/SSL version by default.

LetsEncrypt

LetsEncrypt Usage Statistics · Download List of All Websites using LetsEncrypt

Let’s Encrypt is a free open Certificate Authority.

Root Authority

HSTS

HSTS Usage Statistics · Download List of All Websites using HSTS

Forces browsers to only communicate with the site using HTTPS.

Invalid Certificate Dates

Invalid Certificate Dates Usage Statistics · Download List of All Websites using Invalid Certificate Dates

The SSL certificate for this site has expired or is not active yet.

Linode

Linode Usage Statistics · Download List of All Websites using Linode

VPS hosting company specializing in Linux hosting.

US hosting · VPS Hosting

DNSSEC

DNSSEC Usage Statistics · Download List of All Websites using DNSSEC

DNSSEC strengthens DNS authentication by using digital signatures based on public key cryptography.

nginx

nginx Usage Statistics · Download List of All Websites using nginx

nginx [engine x] is a HTTP server and mail proxy server written by Igor Sysoev.

Ubuntu

Ubuntu Usage Statistics · Download List of All Websites using Ubuntu

Ubuntu is a free, Debian derived Linux-based operating system, available with both community and professional support.

IPv6

IPv6 Usage Statistics · Download List of All Websites using IPv6

The website has an IPv6 record.

Copyright Year 2022

Copyright Year 2022 Usage Statistics · Download List of All Websites using Copyright Year 2022

Webpage has a copyright year of 2022 with no detectable mention of the current year.