Look up an HTTP status code

Look up an HTTP status code’s class, registered meaning, and common handling.

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ToolHTTP Status Reference
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How it works

The numeric code maps to its IANA class and registered phrase, then common semantics, cache behavior, and retry guidance are shown. The reference describes protocol meaning rather than one server’s implementation.

  • The first digit groups status classes.
  • Registry text remains distinct from advice.

Worked example

Look up HTTP 429 Too Many Requests
Get the meaning, category, and RFC spec for status code 429
Input
											429
Output
												Code: 429
Phrase: Too Many Requests
Description: The user has sent too many requests in a given amount of time (rate limiting).
Category: Client Error
Spec: RFC 6585

When to use this

API docs, proxies, and monitoring dashboards reference HTTP statuses.

Edge cases

  • 204 has no response content.
  • 304 relies on a cached representation.
  • 429 may include Retry-After but does not require it.

References