Responsecodes.xyz
responsecodes.xyz returns response status codes based on the subdomain. https://222.responsecodes.xyz returns a response with a status code of 222. https://999.responsecodes.xyz returns a response with a status code of 999. Non-numeric subdomains will return a 400. I built this because I needed it and I couldn't find one after searching around for a few minutes.
In plain words
Responsecodes.xyz is a testing utility that returns HTTP response status codes based on the subdomain entered. Users can access any numeric status code by using it as a subdomain (for example, 222.responsecodes.xyz returns a 222 status code), while non-numeric subdomains return a 400 error. The tool is designed for developers who need to test how their applications handle different HTTP response codes.
written from the facts on this page · September 2026
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