Is there a service that Quad9 offers that does not have the blocklist or other security?

The primary IP address for Quad9 is 9.9.9.9, which includes the blocklist, DNSSEC, and other security features. However, there are alternate IP addresses that the service operates which do not have these security features. These might be useful for testing validation, or to determine if there are false positives in the Quad9 system.

Secure IP: 9.9.9.9 Blocklist, DNSSEC, No EDNS Client-Subnet

Unsecure IP: 9.9.9.10 No blocklist, no DNSSEC, send EDNS Client-Subnet

Note: Use only one of these two addresses. Some networking software may include terminology such as “Secondary DNS Server” in configuration windows; this can be left blank. Putting both 9.9.9.9 and 9.9.9.10 into “primary” and “secondary” fields may result in unsecure results in rare circumstances.