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So theres three levels, A, B and C. A means that you are the- you own the phone number that youre calling out on and youre also originating that call, you are the source of origination. That is the best you can get, that is what you want. That is what everybody is striving for, A attestation. Essentially what this means is that your call is going to get delivered. B means that we know that you are placing the call. However, we dont- we cant verify that you own that phone number. And its likely that that might be the case if you purchased a phone number from a third party which then youre using for origination method, but they cant quite verify both tokens. Thats still okay. That does mean that your call is going to be delivered. C means we cant verify that you own it. And we also cant verify that youre placing the call. This is no bueno because your call is not going to be delivered. It will be completely blocked by STIR/SHAKEN. And then the last area y