The SIP Diversion header is documented in RFC 5806 (March 2010) with Historic status, and the IESG note there points to History-Info (RFC 4244) as the standard mechanism that was chosen instead.

Checked 2026-09-25

Vendor
IETF
Product
SIP
Subsystem
Diversion
Deployment
any
Region
not restricted
Release range
RFC 5806
Checked
2026-09-25

Sources

Cite this note

APA

WarmTransfer. (2026, September 25). SIP call forwarding and routing loops: source note sip-forwarding-loops-diversion-historic. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-forwarding-loops-diversion-historic

BibTeX

@misc{warmtransfer-claim-sip-forwarding-loops-diversion-historic,
  title  = {SIP call forwarding and routing loops: source note sip-forwarding-loops-diversion-historic},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/sip-forwarding-loops-diversion-historic},
  note   = {Source note sip-forwarding-loops-diversion-historic, checked 2026-09-25}
}

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