Quad9 DOH HTTP/1.1 Retirement, December 15, 2025
8 days ago
- #Quad9
- #DNS
- #HTTP
- Quad9 will discontinue DNS-over-HTTPS (DOH) support for HTTP/1.1 on December 15, 2025.
- Most users will not be affected, but older or non-compliant devices may need to switch to DNS-over-TLS or unencrypted DNS.
- MikroTik devices configured for DOH using HTTP/1.1 will stop working unless updated.
- Quad9 encourages users to upgrade systems or switch to DNS-over-TLS for better security.
- The change allows Quad9 to focus on newer protocols and improve platform stability and performance.
- Quad9 cannot notify affected users directly due to privacy policies, so sharing the information is encouraged.