DNS_ERROR_INVALID_IP_ADDRESS - 9552 (0x2550)
Invalid IP address.
Updated: Feb 21, 2026
Technical Meaning
The DNS_ERROR_INVALID_IP_ADDRESS error code indicates that a problem was encountered with an IP address during the Domain Name System (DNS) resolution process. This error is typically returned by Windows API functions when an invalid or malformed IP address is detected.
Error Details
This error occurs when the system attempts to resolve a domain name but encounters an IP address that does not conform to valid IPv4 or IPv6 format standards. The error code signifies that the IP address provided as input is incorrect, and it may be due to various reasons such as syntax errors, invalid characters, or out-of-range values.
Usage Context
The DNS_ERROR_INVALID_IP_ADDRESS error can occur in several scenarios where DNS resolution is performed by Windows API functions. Common contexts include:
- Resolving domain names to IP addresses using the
DnsQuery()function. - Configuring network settings that involve specifying IP addresses, such as setting up static IP configurations or configuring DNS servers.
Developer Interpretation
When this error code is returned, it indicates that the application has provided an invalid IP address. Developers should ensure that all input parameters are validated and formatted correctly before passing them to Windows API functions for DNS resolution. This includes checking for correct syntax, valid character sets, and appropriate value ranges.
Related Errors
ERROR_INVALID_PARAMETER(1208): A generic error indicating an invalid parameter was passed to a function.DNS_ERROR_NO_SUCH_DOMAIN(9536): Indicates that the domain name does not exist in the DNS system.DNS_ERROR_BAD_NAME_FORMAT(9544): Indicates that the domain name format is incorrect but may still be valid.
FAQ
Q: What causes this error?
A: This error typically occurs when an IP address with invalid syntax or out-of-range values is provided to a Windows API function for DNS resolution. It can also occur if the IP address contains illegal characters or does not conform to standard IPv4 or IPv6 formats.
Q: How can I prevent this error?
A: Ensure that all IP addresses are validated and formatted correctly before passing them to any Windows API functions. Use validation routines provided by the operating system or third-party libraries to check for valid IP address syntax and ranges.
Summary
The DNS_ERROR_INVALID_IP_ADDRESS error code is a generic indication of an invalid IP address during DNS resolution. Developers should validate all input parameters to avoid this error and ensure that network configurations are correct. Understanding the context in which this error occurs can help in diagnosing and resolving issues related to network configuration and DNS resolution.