To the best of knowledge, STIR/SHAKEN is essentially a North American Initiative. Atleast in the Canadian Market, we see most of the calls originate internationally. With that context how much impact this will have in improving, as you said the trust leve

1. General Battling Robocallers with STIR/SHAKEN
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International calls that arrive into the North American market would be attested as a “C” - the trust level is very low.