HTTP Status Code Registry -- Per [RFC2817] The HTTP Status Code Registry defines the name space for the Status-Code token in the Status line of an HTTP response. The initial values for this name space are those specified by: 1. Draft Standard for HTTP/1.1 2. Web Distributed Authoring and Versioning [defines 420-424] 3. WebDAV Advanced Collections (Work in Progress) [defines 425] 4. Section 6 [defines 426] Values to be added to this name space SHOULD be subject to review in the form of a standards track document within the IETF Applications Area. Any such document SHOULD be traceable through statuses of either 'Obsoletes' or 'Updates' to the Draft Standard for HTTP/1.1. HTTP Status Code Registry Description Value Reference ----------- ----- --------- [] Reference --------- [RFC2817] Khare, R., Lawrence, S., "Upgrading to TLS Within HTTP/1.1", RFC 2817, May 2000.