videowall.online is a convenience domain to access your videowall with a safe browser certificate. It still can only be accessed in your local network, do not worry! If you are looking for the software, Corollarium Software VideoWall is here.
This is a DNS server that resolves local addresses and allow you to access secure contexts in private networks.
This server is provided by Corollarium Technologies, and used in our product Corollarium Software VideoWall. See source code for this server on GitHub for your own TLS wildcard server.