The FCC states that confirming a customer's legitimate right to use a telephone number for A attestation requires due diligence by the originating service provider.
Checked 2026-10-02
- Vendor
- not restricted
- Product
- not restricted
- Subsystem
- FCC third-party authentication rule
- Deployment
- carrier
- Region
- us
- Release range
- effective 2025-09-18
- Checked
- 2026-10-02
Sources
- Call Authentication Trust Anchor (Federal Register 2025-15809; FCC 24-120) — Office of the Federal Register via GovInfo · tier 1 standards and regulators · 90 FR 40245
Cite this note
APA
WarmTransfer. (2026, October 2). Troubleshooting STIR/SHAKEN attestation levels on outbound calls: source note stir-shaken-attestation-troubleshooting-tp-due-diligence. WarmTransfer. https://warmtransfer.net/knowledge/claims/stir-shaken-attestation-troubleshooting-tp-due-diligence
BibTeX
@misc{warmtransfer-claim-stir-shaken-attestation-troubleshooting-tp-due-diligence,
title = {Troubleshooting STIR/SHAKEN attestation levels on outbound calls: source note stir-shaken-attestation-troubleshooting-tp-due-diligence},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/stir-shaken-attestation-troubleshooting-tp-due-diligence},
note = {Source note stir-shaken-attestation-troubleshooting-tp-due-diligence, checked 2026-10-02}
}