> You can block based on STIR/SHAKEN attestations, and have a blocklist of calling carriers, but you'll have to run your own PBX and SIP trunk to do it. That's

> You can block based on STIR/SHAKEN attestations, and have a blocklist of calling carriers, but you'll have to run your own PBX and SIP trunk to do it. That's not too big a lift anymore, at least. Wow thanks very much for your response! I have this. What carrier provides this metadata in the SIP headers? AT&T doesnt. I used to be able to obtain ANI/RPID fields on our circuit switched lines, but I get very limited metadata now. What do I need to ask for? I understand the implications of this type of blocking, and I give absolutely zero fucks. I should have more ability to determine whether or not I want to take the call traffic or not.