--- title: Trusted Calling with SHAKEN/STIR description: Enhancing Caller ID Security and Trustworthiness, Improve the answer rate, connect rate, enhance the credibility of the phone number. --- [Skip to content](https://knowledge.flashintel.ai/en/knowledge/trusted-calling-with-shaken/stir#main-content) English Show submenu for translations [![FlashLabs.ai](https://knowledge.flashintel.ai/hubfs/labs-195_40-%E8%93%9D.svg)](https://www.flashlabs.ai/) Open main navigation Close main navigation - English Show submenu for translations How can we help you? - There are no suggestions because the search field is empty. 1. [Knowledge Base](https://knowledge.flashintel.ai/en/knowledge?hsLang=en) 2. [Engage Tab](https://knowledge.flashintel.ai/en/knowledge/engage-tab?hsLang=en) 3. [Parallel-Dialer](https://knowledge.flashintel.ai/en/knowledge/engage-tab?hsLang=en#parallel-dialer) # Trusted Calling with SHAKEN/STIR ## Enhancing Caller ID Security and Trustworthiness ### What is SHAKEN/STIR and why does it matter? **Increase call answer rates for trusted callers.** SHAKEN/STIR is a protocol mandated by the FCC to combat the rise in unwanted robocalls and unlawful caller ID spoofing. When adopted, carriers can present a trust indicator, like “Caller Verified,” to recipients’ phones.   **Stop telephone hijacking with near-instant traceback.** Fraudsters that illegally spoof caller IDs won’t be trusted in the SHAKEN/STIR ecosystem. If a caller abuses SHAKEN/STIR, they will be held accountable with near-instant traceback by regulatory groups and law enforcement.   **Improve the reputation of your calls.** The SHAKEN/STIR attestation given to calls is an important input to call analytic companies that service providers use to determine if a call should ring the handset as “Caller Verified” or “Potential Spam,” go straight to voicemail or get blocked.   To learn more about the implementation of SHAKEN/STIR, read the following resources: - [Combating Spoofed Robocalls with Caller ID Authentication](https://www.fcc.gov/call-authentication) - [TRACED Act Implementation](https://www.fcc.gov/TRACEDAct) ### **Vetting and Attestation Levels** FlashRev's Compliance operations team is responsible for vetting the Business Profile and the SHAKEN/STIR Trust Product. The time to vet is 24 hours for Business Profile and 72 hours for SHAKEN/STIR Trust Product. As of 07/2024, support for the SHAKEN/STIR call authentication framework is being deployed in the **United States** only. **Understanding the Three Levels of Attestation in SHAKEN/STIR** - `A` : the highest attestation given by the originating service provider to indicate that the caller is known and has the right to use the phone number as the caller ID - `B` : the customer is known, it is unknown if they have the right to use the caller ID being used - `C` : it doesn't meet the requirements of A or B including international calls. When will a FlashRev call be signed with level `A` attestation? When a customer has the following, the call will be signed with `A` level attestation: - Approved Business Profile - Approved SHAKEN/STIR Trust Product that is linked to the Business Profile - Phone number(s) assigned to both the Business Profile & SHAKEN/STIR Trust Product (only calls from those assigned Phone Numbers will be signed "A") #### When will a FlashRev call be signed with level `B` attestation? When a customer has at a minimum the following, their calls  will be signed with `B` level attestation: - Approved Business Profile - Customer is using a non-FlashRev phone number. #### When will a FlashRev call be signed with level `C` attestation? 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