Let's Encrypt rolls out free IP address certificates

Let's Encrypt now offers free TLS/SSL certificates for IP addresses, joining other certificate authorities that charge $40-90 annually for this service. While most websites use domain names, IP certificates can be useful for hosting providers creating default landing pages, publishers avoiding domain costs, or securing DNS over HTTPS servers. The certificates have a six-day lifespan as part of the industry trend toward short-lived certificates for enhanced security, requiring automated renewal through ACME clients.