HTTP 306 (Unused)

Status code 306 · Class 3xx

HTTP

(Unused)

HTTP request chain from browser through CDN and proxy to the origin server
HTTP errors: find which hop in the request chain failed and read its logs.

What it means

HTTP_306 is a HTTP error code reported by web servers and HTTP clients. Its official message is: “(Unused)”

How to fix HTTP 306 (Unused)

  1. This is a redirect, not an error: check the Location header with 'curl -I <url>'
  2. If the browser loops, look for conflicting HTTP→HTTPS or www/non-www rules in the server, CDN and application

Related errors

HTTP 304 Not ModifiedHTTP 302 FoundHTTP 301 Moved PermanentlyHTTP 500 Internal Server ErrorHTTP 501 Not ImplementedHTTP 502 Bad GatewayHTTP 503 Service UnavailableHTTP 504 Gateway Timeout

Source: IANA HTTP Status Code Registry

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