HTTP Status Codes
Every HTTP status, explained
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HTTP Status Codes
Every HTTP status, explained
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About this tool
A searchable IANA reference of HTTP status codes with registered reason phrases, plain-English descriptions and unofficial badges.
The HTTP Status Code Lookup is a searchable reference of the status codes in the IANA HTTP Status Code Registry — from 1xx informational through 5xx server errors — each with its registered reason phrase and a plain-English description of when it applies.
Search by number (429), by name (Too Many Requests) or by a word from the description (timeout, redirect, rate), or narrow the list to a single class with the 1xx–5xx chips. The reference covers the WebDAV codes defined by RFC 4918 (207, 423, 424, 507), the older informational codes, and newer additions such as 425 Too Early and 451 Unavailable For Legal Reasons. Codes that are not in the registry, like 599, are clearly marked unofficial.
It is a quick plain-English lookup, not a replacement for the specification: where the exact normative wording matters, follow the RFC listed in the IANA registry. Everything loads client-side with no tracking and nothing submitted.
Key features
Everything you get with HTTP Status Codes — no premium upsell.
Every IANA-registered HTTP status code from 1xx through 5xx, with plain-English descriptions
Search by number, reason phrase or a word from the description
Filter to a single class (1xx–5xx) or show them all
Non-registered codes such as 599 clearly labelled unofficial
Client-side — loads instantly, nothing transmitted
How to use HTTP Status Codes
Follow the steps below to use the tool.
- 1
Search for a code or phrase
Type a status code number (429) or a word (redirect, timeout) into the search box to filter the list as you type.
- 2
Filter by class
Use the 1xx–5xx chips to show a single class, or All to see every code.
- 3
Read an entry
Each card shows the code, its registered reason phrase and when the status applies. Codes that are not in the IANA registry are tagged unofficial.
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Launch HTTP Status CodesFrequently asked questions
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