This page formerly contained some of the Federal Communications Commission regulations relating to telephone numbering, excerpted from the Code of Federal Regulations, Title 47, Volume 3, Part 52, Subpart B (pages 52-55), revised as of October 1, 1997. However, those regulations have been amended substantially, so please go directly to the source for the updated version:

Please visit the National Archives Electronic Code of Federal Regulations, eCFR online, or go directly to 47 CFR 52 (B)

The relevant highlights are:


In addition, here are links to some of the provisions in the United States Code relating to junk faxes, robocalls, and Caller ID spoofing:

Note that §227(b)(2), §227b, and §227b-2 are three separate, distinct portions of Title 47. Letters, numbers, and in some cases Roman numerals, in parentheses, indicate subsections and sub-subsections.

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