How is FCC Protecting Against Illegal Text Messages
Federal Communications Commission adopted a Report and Order setting, first regulations targeted at preventing scam text messages sent to consumers, relying on its authority provided by the TCPA. Mobile wireless providers are required to block texts, at the network level.
United States North American Numbering Plan Further Notice Proposed Rulemaking Ccm Dno North American Numbering Plan
Source: natlawreview.com