What This Tool Does:
This tool compares your domain’s nameserver data from WHOIS records and those returned by public DNS queries.
It then checks for consistency between the two.
Best Practices:
- Ensure that the nameserver information in your WHOIS records matches what your DNS actually returns.
- Consistent nameserver data helps ensure reliable DNS resolution.
- Inconsistencies can be due to recent changes or misconfigurations—verify with your registrar if needed.
Important Note on Formatting:
Some DNS resolvers return fully-qualified names with a trailing dot (e.g. "ns1.example.com."), while WHOIS data often omits that. This tool now normalizes names to ignore such differences.
Example Output:
If the records differ, the tool will output an inconsistency message, prompting you to verify with your registrar or DNS provider.