- Title 1 - General Provisions
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- Title 3 - The President
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- Title 47 - Telecommunication
- Title 48 - Federal Acquisition Regulations System
- Title 49 - Transportation
- Title 50 - Wildlife and Fisheries
CFR > Title 47 - Telecommunication > CHAPTER I—FEDERAL COMMUNICATIONS COMMISSION > SUBCHAPTER B—COMMON CARRIER SERVICES (Parts 20–69) > PART 51—INTERCONNECTION > SUBPART B—Telecommunications Carriers (§51.100 to §51.100)