39 C.F.R. § 3021.11
Petitions for Review, comments, motions, answers, and other documents may be submitted by persons other than the Postal Service by mail, electronically through the Commission's website, http://www.prc.gov, or by delivery to the Commission's offices at 901 New York Avenue NW., Suite 200, Washington, DC 20268-0001.
[77 FR 6679, Feb. 9, 2012, as amended at 85 FR 9660, Feb. 19, 2020]