"The new standards currently apply to large carriers, with smaller phone carriers getting extra time to comply, in some cases.
However, the FCC also said in its announcement that it has identified some of those smaller carriers as primary offenders in originating spoofed robocalls."
https://www.forbes.com/sites/waynerash/2021/06/30/fcc-anti-robocall-standards-go-into-effect-today-june-30-2021/
Hallelujah!