RFC 6648: Deprecating the "X-" Prefix and Similar Constructs in Application Protocols (BCP 178)

Publisher

IETF / RFC Editor

URL

https://www.rfc-editor.org/rfc/rfc6648.html

Published

2012-06-01

Updated

unknown

Accessed

2026-10-02

HTTP status

200

License

IETF Trust Legal Provisions; IETF text may be quoted with attribution; short excerpts and locators only

Source notes citing this source

• RFC 6648 (BCP 178, June 2012) says creators of new application-protocol parameters SHOULD NOT prefix their names with 'X-' or similar constructs. in context
• RFC 6648 says implementations MUST NOT assume anything about a parameter's status based solely on the presence or absence of an 'X-' prefix. in context

Cite this source record

APA

WarmTransfer. (2012, June 1). RFC 6648: Deprecating the "X-" Prefix and Similar Constructs in Application Protocols (BCP 178). WarmTransfer. https://warmtransfer.net/knowledge/sources/rfc-6648-x-prefix-deprecation

BibTeX

@misc{warmtransfer-rfc-6648-x-prefix-deprecation,
  title  = {RFC 6648: Deprecating the "X-" Prefix and Similar Constructs in Application Protocols (BCP 178)},
  author = {{WarmTransfer}},
  year   = {2012},
  url    = {https://warmtransfer.net/knowledge/sources/rfc-6648-x-prefix-deprecation},
  note   = {IETF / RFC Editor, accessed 2026-10-02}
}