Classify Us Phone Attestation For Free

Essentially, the attestation levels are designed to protect the integrity of the telecom networks and provide a way to signal confidence levels to other carriers that the calls can be trusted, and at what level.

Gateway Attestation (C) ? The service provider has authenticated from where it received the call, but cannot authenticate the call source. An example of this case would be a call received from an international gateway.

Lastly, ?C? or ?gateway? attestations mean the provider has originated the call on the network, but cannot authenticate the call source.

"Gateway Attestation", "C", indicates the call can only be verified as coming from a known gateway, for instance, a connection to another service provider.

Partial Attestation (B) ? The service provider has authenticated the call origination, but cannot verify the call source is authorized to use the calling number. An example of this use case is a telephone number behind an enterprise PBX.

Many would call it the most important part of STIR/SHAKEN. In the STIR/SHAKEN process, attestation occurs when the originating telephone service provider verifies the call's source and call number to attest the incoming number's authenticity.

Gateway Attestation (C) - The identity of the caller is not known, as the call originated outside of the network, or internationally. C level is applied when A or B cannot be.

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Certified Caller is a complete STIR/SHAKEN solution that enables service providers to authenticate and verify the caller telephone identity.

There are three types of attestation services: compilation, review and audit.