On March 23, 2017, the FCC Commissioners voted unanimously to adopt a Notice of Proposed Rulemaking (NPRM) and Notice of Inquiry (NOI) through which the Commission aims to develop rules-based and other solutions to reduce the number of robocalls placed to consumers. The NPRM seeks input from the public on several issues and questions related to robocalls, including the adoption of rules that would allow providers to block spoofed robocalls either upon request from a subscriber whose telephone number is being spoofed or if the calls are placed from “invalid numbers, valid numbers that are not allocated to a voice service provider, [or] valid numbers that are allocated but not assigned to a subscriber.” It also seeks comment on a proposal to establish a corresponding safe harbor from the provider’s call completion obligations, methods to address spoofing from internationally-originated numbers, and other safeguards the Commission should put in place to minimize blocking of lawful calls. Initial comments on the NPRM/NOI will be due 45 days after the item is published in the Federal Register, and reply comments will be due 30 days after that.