Knowledge

DNS_ERROR_RCODE_NOT_IMPLEMENTED - 9004 (0x232C)

DNS request not supported by name server.

Updated: Feb 21, 2026

Introduction

The DNS_ERROR_RCODE_NOT_IMPLEMENTED error code, with the numeric value of 9004 and the hexadecimal representation of 0x232C, is returned when a DNS request cannot be supported by the name server. This article provides an in-depth explanation of this error code and its implications for developers.

Technical Meaning

The DNS_ERROR_RCODE_NOT_IMPLEMENTED error indicates that the DNS query received by the name server does not conform to the standards or capabilities supported by the server. Specifically, it suggests that the request type or resource record (RR) type is not recognized or supported by the server.

Error Details

This error typically occurs when a DNS client sends a query for a RR type that the name server cannot process. For example, this could happen if the name server does not support certain types of queries such as SIG records (DNSSEC) or specific resource record types that are not part of the standard set.

Usage Context

This error code is commonly encountered in scenarios where a DNS client attempts to query for unsupported RR types. It can also be relevant when dealing with non-standard or experimental DNS protocols and extensions.

Developer Interpretation

When encountering DNS_ERROR_RCODE_NOT_IMPLEMENTED, developers should consider the following:

  • Verify that the requested resource record type is supported by the name server.
  • Ensure that all queries adhere to standard DNS protocol specifications.
  • Check for any non-standard or experimental protocols being used, as they might not be fully supported by all DNS servers.

Related Errors

  • DNS_ERROR_RCODE_REFUSED (9012): Indicates that the name server is unwilling to perform the query.
  • DNS_ERROR_RCODE_FORMERR (9037): Indicates a malformed request from the client.
  • DNS_ERROR_RCODE_NXDOMAIN (9045): Indicates that the domain does not exist in the DNS namespace.

FAQ

Q: What causes this error?

A: This error typically occurs when a query for an unsupported RR type is sent to a name server. It can also be caused by non-standard or experimental protocols being used.

Q: How can I resolve this issue?

A: Ensure that the requested resource record types are supported by the DNS server and adhere to standard DNS protocol specifications.

Summary

The DNS_ERROR_RCODE_NOT_IMPLEMENTED error code is a specific indication that a DNS request cannot be processed due to unsupported RR types. Developers should verify query types and ensure compliance with standard protocols to avoid this issue.