DNS_ERROR_INVALID_NSEC3_ITERATION_COUNT - 9124 (0x23A4)
The specified NSEC3 iteration count is higher than allowed by the minimum key length used in the zone.
Updated: Feb 21, 2026
Technical Meaning
This error code indicates that the NSEC3 iteration count specified in a DNS zone configuration is higher than what is allowed by the minimum key length used within that zone. The NSEC3 mechanism, which provides denial of existence and forward security for DNS records, requires a balance between the iteration count and the key length to ensure both security and performance.
Error Details
The error code DNS_ERROR_INVALID_NSEC3_ITERATION_COUNT (0x23A4) is returned when the NSEC3 parameters are inconsistent. Specifically, it occurs if the number of iterations specified in a DNS zone's NSEC3 record exceeds what is feasible given the key length used for that zone.
Usage Context
This error typically arises during the validation or configuration of DNS zones that utilize the NSEC3 mechanism. Administrators and developers must ensure that the parameters are correctly set to avoid this error, as it can prevent the zone from being properly configured or validated.
Developer Interpretation
Developers should interpret this error code as an indication that there is a mismatch between the specified NSEC3 iteration count and the key length used in the DNS zone. This could be due to incorrect configuration settings or a misunderstanding of the relationship between these parameters. Developers are advised to review the configuration of their DNS zones, particularly focusing on the NSEC3 parameters, to ensure they meet the necessary requirements.
Related Errors
DNS_ERROR_INVALID_ZONE_KEY(0x23A8): This error might be related if there is an issue with the key length itself rather than the iteration count.DNS_ERROR_NSEC3_PARAMETER_MISMATCH(0x23B4): This could indicate a more general mismatch in NSEC3 parameters, which may include both iteration count and key length issues.
FAQ
Q: What does DNS_ERROR_INVALID_NSEC3_ITERATION_COUNT mean?
A: It indicates that the specified NSEC3 iteration count is higher than allowed by the minimum key length used in the zone.
Q: How can I resolve this error?
A: Ensure that the NSEC3 parameters, including the iteration count and key length, are correctly configured to match each other. Consult the documentation for your DNS software or service provider for specific guidance on setting these parameters.
Summary
The DNS_ERROR_INVALID_NSEC3_ITERATION_COUNT error code highlights a configuration issue in DNS zones using NSEC3. Developers should carefully review and adjust their zone configurations to ensure that all NSEC3 parameters are correctly set, particularly the iteration count relative to the key length.