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U.S. Code of Federal Regulations
Regulations most recently checked for updates: Aug 27, 2025
All Titles
Title 47
Chapter I
Part 52
Subpart D - Subpart D—Toll Free Numbers
§ 52.101 - General definitions.
§ 52.103 - Lag times.
§ 52.105 - Warehousing.
§ 52.107 - Hoarding.
§ 52.109 - Permanent cap on number reservations.
§ 52.111 - Toll free number assignment.
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