DNS_ERROR_UNKNOWN_RECORD_TYPE - 9704 (0x25E8)

Unknown DNS record type.

Updated: Feb 21, 2026

Technical Meaning

The error DNS_ERROR_UNKNOWN_RECORD_TYPE with the numeric value 9704 and hex code 0x25E8 is returned when a DNS query or operation encounters an unknown record type. This indicates that the DNS server received a request for a record type it does not recognize.

Error Details

This error typically occurs during DNS resolution processes where the DNS client or resolver expects to receive a specific type of resource record but instead receives one with an unrecognized type identifier. The exact nature of the unknown record type is not specified in this generic error, making it context-dependent and requiring further investigation to determine the precise cause.

Usage Context

This error can be encountered in various scenarios involving DNS operations such as name resolution, zone transfers, or dynamic updates. It may also appear when using APIs that interact with the DNS infrastructure, like DnsQuery or DnsDynamicUpdate functions.

Developer Interpretation

When this error is returned, it signifies a failure due to an unrecognized record type in the DNS response. Developers should interpret this as a need for additional context or configuration rather than a fundamental issue with their application's interaction with the DNS system. The specific record type that caused the error can be found in the DNS_QUERY_INFO structure if the operation involved such information.

Related Errors

  • ERROR_RCODE_FORMAT (9703): Indicates an invalid response code from a DNS server, which might indirectly lead to this error if the response contains unrecognized record types.
  • ERROR_RCODE_REFUSED (9516): The DNS server refused the query for some reason, possibly due to unsupported or unknown record types in the request.

FAQ

Q: What does DNS_ERROR_UNKNOWN_RECORD_TYPE mean?

A: It indicates that a DNS response contained an unrecognized record type. This error is generic and requires further investigation into the specific context where it occurred.

Q: How can I handle this error in my application?

A: Review the operation's context, validate parameters, and ensure compatibility with the DNS records being queried or updated. Consult the documentation for the specific API used to understand its requirements and limitations.

Summary

The DNS_ERROR_UNKNOWN_RECORD_TYPE error is a generic indication that an unrecognized record type was encountered during DNS processing. Developers should focus on validating input and ensuring their applications are compatible with the DNS infrastructure they interact with, as this error does not provide specific details about the nature of the unknown record.