> June 30, 2022—Starting today certain small phone companies must comply with FCC rules to implement caller ID authentication tools on their networks, just as large voice service providers are required to since June 30, 2021.
Seems like it's very new for small phone companies, but yeah I agree today seems to be a deadline.
My understanding is that enforcement will start tomorrow. But I'm not especially familiar with the Telco environment. My understanding is also that there is still a remaining loophole for international telcos, which will close in another year's time.