HTTP Status Codes Dataset 2026 (RFC 9110)

Name: HTTP Status Codes Reference Dataset 2026
Creator: Bytepane
Published: 2026-04-26
License: https://creativecommons.org/licenses/by/4.0/

Free downloadable JSON dataset: 62 HTTP status codes from the current IANA registry, RFC 9110 (HTTP Semantics, June 2022), and supplementary RFCs/drafts. Each record carries code, reason phrase, category, defining reference, and MDN link where available. Licensed under Creative Commons Attribution 4.0.

Download

Download JSON (5KB, 62 records)

Format: JSON with embedded schema.org/Dataset header. License: CC BY 4.0.

What's included

1xx Informational (5 codes): 100, 101, 102, 103, temporary 104
2xx Success (10 codes): 200-208, 226
3xx Redirection (7 codes): 300-304, 307, 308
4xx Client Error (28 codes): 400-418, 421-426, 428-431, 451
5xx Server Error (12 codes): 500-511

Sample records

[
  { "code": 104, "name": "Upload Resumption Supported", "category": "Informational", "rfc": "draft-ietf-httpbis-resumable-upload-05" },
  { "code": 200, "name": "OK", "category": "Success", "rfc": "RFC 9110" },
  { "code": 201, "name": "Created", "category": "Success", "rfc": "RFC 9110" },
  { "code": 301, "name": "Moved Permanently", "category": "Redirection", "rfc": "RFC 9110" },
  { "code": 401, "name": "Unauthorized", "category": "Client Error", "rfc": "RFC 9110" },
  { "code": 404, "name": "Not Found", "category": "Client Error", "rfc": "RFC 9110" },
  { "code": 429, "name": "Too Many Requests", "category": "Client Error", "rfc": "RFC 6585" },
  { "code": 500, "name": "Internal Server Error", "category": "Server Error", "rfc": "RFC 9110" },
  { "code": 503, "name": "Service Unavailable", "category": "Server Error", "rfc": "RFC 9110" }
]

Sources

IANA HTTP Status Code Registry: Current assigned code list, including temporary 104. https://www.iana.org/assignments/http-status-codes/http-status-codes.xhtml
RFC 9110: HTTP Semantics (June 2022) — supersedes RFCs 7230-7235. https://www.rfc-editor.org/rfc/rfc9110
RFC 4918: WebDAV (207, 422, 423, 424, 507)
RFC 6585: Additional codes (428, 429, 431, 511)
RFC 7725: Legal restrictions (451)
RFC 8297: Early Hints (103)
RFC 8470: Too Early (425)
MDN Web Docs: Cross-referenced documentation links per code

Use cases

HTTP client libraries (mapping codes to human-readable messages)
API documentation generators (OpenAPI, Swagger UI)
Error logging and monitoring systems (datadog, sentry tag enrichment)
Educational tutorials and developer cheat sheets
IDE plugins and code completion

Citation

Bytepane (2026). HTTP Status Codes Reference Dataset 2026. Version 2026.05. https://bytepane.com/http-status-codes-dataset-2026-rfc-9110-downloadable-json-mdn-references/ — Licensed CC BY 4.0.

Related Bytepane resources

Note: HTTP status code 418 ("I'm a teapot") is included for historical completeness and remains reserved/unused in the IANA registry. Status code 104 is included because IANA currently lists it as a temporary Upload Resumption Supported registration; verify draft support before relying on it in production. Some codes from older RFCs (102 Processing, 510 Not Extended) are deprecated or historical but retained for compatibility.