Site Feedback

Title 47

Displaying title 47, up to date as of 10/13/2026. Title 47 was last amended 10/13/2026.
New Finding Aids are now available on eCFR.gov. The Parallel Table of Authorities, Subject Index, and Agency-prepared Indexes are now online! Learn more
eCFR Content

The Code of Federal Regulations (CFR) is the official legal print publication containing the codification of the general and permanent rules published in the Federal Register by the departments and agencies of the Federal Government. The Electronic Code of Federal Regulations (eCFR) is a continuously updated online version of the CFR. It is not an official legal edition of the CFR.

Learn more about the eCFR, its status, and the editorial process.

Title 47TelecommunicationPart / Section
Chapter IFederal Communications Commission0 – 199
Subchapter BCommon Carrier Services20 – 69
Part 52Numbering52.1 – 52.203
Subpart AScope and Authority52.1 – 52.5
§ 52.1Basis and purpose.
§ 52.3General.
§ 52.5Definitions.
Subpart BAdministration52.7 – 52.19
Subpart CNumber Portability52.20 – 52.99
Subpart DToll Free Numbers52.101 – 52.111
§ 52.101General definitions.
§ 52.103Lag times.
§ 52.105Warehousing.
§ 52.107Hoarding.
§ 52.109Permanent cap on number reservations.
§ 52.111Toll free number assignment.
Subpart EUniversal Dialing Code for National Suicide Prevention and Mental Health Crisis Hotline System52.200 – 52.203
§ 52.200Designation of 988 for a National Suicide Prevention and Mental Health Crisis Hotline.
§ 52.201Texting to the National Suicide Prevention and Mental Health Crisis Hotline.
§ 52.202Georouting of Wireless Calls to the National Suicide Prevention and Mental Health Crisis Hotline.
§ 52.203Georouting of text messages to the National Suicide Prevention and Mental Health Crisis Hotline.
Appendix to Part 52
Deployment Schedule for Long-Term Database Methods for Local Number Portability