HTTPS RR

HTTPS RR (HTTPS Resource Records) are a type of DNS record that delivers configuration information and parameters for how to access a service via HTTPS.

An HTTPS RR can be used to optimize the process of connecting to a service using HTTPS. Further, the presence of an HTTPS RR signals that all useful HTTP resources on the origin are reachable over HTTPS, which in turn means that a browser can safely upgrade connections to the domain from HTTP to HTTPS.

See also

• RFC 9460: Service Binding and Parameter Specification via the DNS (SVCB and HTTPS Resource Records)
• Strict Transport Security vs. HTTPS Resource Records: the showdown (Emily M. Stark blog)
• Related glossary terms:
  • TLS