2xx SuccessHTTP Status Code Reference

HTTP 203 Non-Authoritative Information— What It Means, Causes & How to Fix It

The request was successful but the returned metadata may be from a local or third-party copy rather than the origin server. This is mostly used by mirrors or backups of another resource.

Live URL Status Checker

Enter any URL to see its real HTTP response code

Common Causes

  • Response modified by a transforming proxy
  • Cached copy served from a CDN with modified headers
  • Mirror server returning slightly different metadata

How to Fix

  1. 1No fix needed if the data is acceptable
  2. 2Request directly from the origin server for authoritative data
  3. 3Check proxy and CDN configuration if metadata accuracy matters

Example

HTTP 203 Non-Authoritative Information
GET /api/data HTTP/1.1

→ 203 Non-Authoritative Information
→ Data may differ from the origin server's version

Related Success Codes

200

OK

201

Created

202

Accepted

204

No Content

205

Reset Content

206

Partial Content

207

Multi-Status

208

Already Reported

226

IM Used

Commonly Referenced Status Codes

The most frequently searched HTTP status codes

200OK201Created204No Content301Moved Permanently302Found400Bad Request401Unauthorized403Forbidden404Not Found422Unprocessable Content429Too Many Requests500Internal Server Error502Bad Gateway503Service Unavailable504Gateway Timeout

Related Tools

HTTP Status LookupAPI Request BuildercURL GeneratorHTTP Header ViewerHTTP Header DiffRedirect Checker