#4183: Does NIOS support DNS CAA records?
Support for CAA (Certification Authority Authorization) records is not available in the NIOS GUI.
NIOS appliances operating with DNS service
NIOS 6.x and later versions
Although NIOS does not support CAA (Certification Authority Authorization) records, support for them may be included as an enhancement in future releases.
Infoblox has an open feature request (RFE-4537) to support on CAA record in future releases.