FCC STIR/SHAKEN 2026 Caller ID Framework
Quick Answer
The FCC's 2026 STIR/SHAKEN framework requires all voice service providers to cryptographically authenticate caller ID information to combat illegal spoofing. It categorizes calls into Attestation A (full authentication), B (partial), and C (gateway origin), giving mobile devices the metadata needed to filter unverified calls.
What is STIR/SHAKEN?
The FCC implemented the STIR/SHAKEN caller ID framework as a critical defense line against spoofed calls in 2026. Under FCC rules, carriers assign cryptographic carrier attestation levels A, B, and C to enforce federal caller ID spoofing laws. While cryptographic verification authenticates the originating number, it works alongside regulatory consumer protections (read our guide on whether the National Do Not Call Registry works against telemarketers).
STIR and SHAKEN are technical protocols that attach a digital certificate to every phone call. The FCC 2026 update specifically targets small and rural carriers that previously had extensions on compliance deadlines.
How does Callro integrate with FCC standards?
While the FCC works at the carrier level, Callro works at the device level. The app is designed to recognize and adapt to the gaps in STIR/SHAKEN framework enforcement. For unverified or spoofed calls, Callro applies its proprietary 26-layer filtering to ensure phones stay quiet.
- Verified Identity: Calls with full STIR/SHAKEN attestation ring through immediately.
- Smart Filtering: Calls without proper verification are subjected to additional behavioral analysis.
How does Callro stay ahead of the curve?
While the FCC's STIR/SHAKEN protections provide a critical layer against phone fraud, combining them with Callro's on-device protection gives phones the most comprehensive defense available in 2026.
Frequently Asked Questions
What is STIR/SHAKEN?
The FCC implemented the STIR/SHAKEN framework as a critical defense line against the avalanche of spoofed and scam calls in 2026. STIR and SHAKEN are technical protocols that attach a digital certificate to every phone call. The FCC 2026 update specifically targets small and rural carriers that previously had extensions on compliance deadlines.
How does Callro integrate with FCC standards?
While the FCC works at the carrier level, Callro works at the device level. The app is designed to recognize and adapt to the gaps in STIR/SHAKEN framework enforcement. For unverified or spoofed calls, Callro applies its proprietary 26-layer filtering to ensure phones stay quiet. Verified Identity: Calls with full STIR/SHAKEN attestation ring through immediately. Smart Filtering: Calls without proper verification are subjected to additional behavioral analysis.
How does Callro stay ahead of the curve?
While the FCC's STIR/SHAKEN protections provide a critical layer against phone fraud, combining them with Callro's on-device protection gives phones the most comprehensive defense available in 2026.
Key Takeaways
- STIR/SHAKEN applies digital certificates to verify that the calling party is authorized to use the number.
- Attestation Level A proves the carrier knows the customer and verifies their right to use the caller ID.
- Attestation Level C indicates calls entering via foreign gateways with unverified originator identity.
- On-device call screening leverages STIR/SHAKEN headers to block unverified Level C robocalls.
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