https://arstechnica.com/tech-policy/2022/09/fcc-advances-plan-to-require-blocking-of-spam-texts-from-bogus-numbers/

The Federal Communications Commission today released a plan to require mobile carriers to block a wide range of illegal text messages.

"In this Notice of Proposed Rulemaking (NPRM), we propose to require mobile wireless providers to block illegal text messages, building on our ongoing work to stop illegal and unwanted robocalls," the FCC order said. "Specifically, we propose to require mobile wireless providers to block texts, at the network level, that purport to be from invalid, unallocated, or unused numbers, and numbers on a Do-Not-Originate (DNO) list." These texts "are highly likely to be illegal," the FCC said.