47 C.F.R. § 14.2 – Limitations.

(a) Except as provided in paragraph (b) of this section no person shall be liable for a violation of the requirements of the rules in this part with respect to advanced communications services or equipment used to provide or access advanced communications services to the extent such person—
1. (1) Transmits, routes, or stores in intermediate or transient storage the communications made available through the provision of advanced communications services by a third party; or
2. (2) Provides an information location tool, such as a directory, index, reference, pointer, menu, guide, user interface, or hypertext link, through which an end user obtains access to such advanced communications services or equipment used to provide or access advanced communications services.
(b) The limitation on liability under paragraph (a) of this section shall not apply to any person who relies on third party applications, services, software, hardware, or equipment to comply with the requirements of the rules in this part with respect to advanced communications services or equipment used to provide or access advanced communications services.
(c) The requirements of this part shall not apply to any equipment or services, including interconnected VoIP service, that were subject to the requirements of Section 255 of the Act on October 7, 2010, which remain subject to Section 255 of the Act, as amended, and subject to the rules in parts 6 and 7 of this chapter, as amended.