Are these real HTTP status codes?

Yes. Every code comes from a built-in table of standardized HTTP status codes defined in the relevant RFCs, such as 200 OK and 404 Not Found, each with its official reason phrase.

What do the status classes mean?

The first digit defines the class: 1xx informational, 2xx success, 3xx redirection, 4xx client error, and 5xx server error. The class tells a client at a glance how to react before it inspects the exact code.

What is a reason phrase?

The reason phrase is the short human-readable text that follows the numeric code on the status line, such as Not Found for 404. Clients should rely on the number, not the phrase, since servers may customize the wording.

Why generate random status codes?

It is useful for teaching, for building documentation examples, and for seeding mock servers and test fixtures with a variety of realistic responses rather than only the few codes you usually handle.

What is the difference between 401 and 403?

401 Unauthorized means the request lacks valid authentication credentials, so the client should authenticate and retry. 403 Forbidden means the server understood the request and the credentials but refuses to authorize it, so retrying with the same identity will not help.

Random HTTP Status Code Generator

A quick way to draw a random HTTP status code with its real reason phrase, its class, and a plain-English explanation of when it is used. Great for teaching, documentation examples, and seeding mock servers.

How it works

Every HTTP response carries a three-digit status code whose first digit defines its class:

1xx  informational
2xx  success
3xx  redirection
4xx  client error
5xx  server error

This tool stores a table of standardized codes with their official reason phrases and a short use case. It optionally filters by class, then picks one at random. The number is the contract; the reason phrase is human-friendly text that a server may customize.

Tips and notes

When handling responses in code, branch on the numeric class first (status >= 500, status >= 400, and so on) rather than matching exact codes, so new or unusual codes still fall into a sensible bucket. Reserve exact-code handling for cases you must treat specially, such as 401 versus 403 or 429 rate limits.