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PART 52—NUMBERING

• SUBPART A—Scope and Authority (§52.1 to §52.5)
• SUBPART B—Administration (§52.7 to §52.19)
• SUBPART C—Number Portability (§52.20 to §52.37-52.99)
• SUBPART D—Toll Free Numbers (§52.101 to §52.111)