adDnsTimestamp
The time (seconds since epoch) that DNS event occured
Used by notifications
1 objects- 1.3.6.1.4.1.664.5.53.8.1.0.1 adDnsIndividualResolutionFailure
Used by conformance groups
1 objects- 1.3.6.1.4.1.664.5.53.99.13.1.1 adGenAOSDnsInfoGroup