This is a new tool, available at
The tool allows you to search for status response codes even if these are not part of IANA’s Status Code Registry.
To use the tool, just submit a keyword or valid status code from 100 to 599.
Unlike similar tools which only match status codes, ours also match keywords. The tool is also cases-insensitive so you can use lower or upper cases.
A brief explanation of falsey values and a status code of 0 is included.