47 CFR 64.6301(b) permits a voice service provider to meet its authentication obligation through a third-party authentication service, provided the third party signs all calls using the provider's own certificate, the provider makes all attestation-level decisions for each SIP call it originates, and the agreement is memorialised in writing specifying the third party's tasks and confirming both conditions.

Checked 2026-09-16

Confirms that the voice service provider shall make all attestation-level decisions for calls signed pursuant to the agreement, and that all calls shall be signed using the voice service provider's Secure Telephone Identity certificate
Vendor
Federal Communications Commission
Product
STIR SHAKEN
Subsystem
Regulation
Deployment
not restricted
Region
united states
Release range
not restricted
Checked
2026-09-16

Sources

Cite this note

APA

WarmTransfer. (2026, September 16). STIR SHAKEN attestation framework: source note shaken-third-party-signing-keeps-the-attestation-decision. WarmTransfer. https://warmtransfer.net/knowledge/claims/shaken-third-party-signing-keeps-the-attestation-decision

BibTeX

@misc{warmtransfer-claim-shaken-third-party-signing-keeps-the-attestation-decision,
  title  = {STIR SHAKEN attestation framework: source note shaken-third-party-signing-keeps-the-attestation-decision},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/shaken-third-party-signing-keeps-the-attestation-decision},
  note   = {Source note shaken-third-party-signing-keeps-the-attestation-decision, checked 2026-09-16}
}

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