Our service can be reached via DNS-over-TLS (DoT) and DNS-over-HTTPS (DoH).
DoT: dns.digitalsize.net:853
DoH: https://dns.digitalsize.net/dns-query
You could use IP addresses too.
94.130.135.203
2a01:4f8:13b:3407::face
The TLS certificates for our domain is signed by letsencrypt.
dns.digitalsize.net