47 CFR Part 52 - PART 52—NUMBERING
- Subpart A—Scope and Authority (§§ 52.1 - 52.5)
- Subpart B—Administration (§§ 52.7 - 52.19)
- Subpart C—Number Portability (§§ 52.20 - 52.38-52.99)
- Subpart D—Toll Free Numbers (§§ 52.101 - 52.111)
- Subpart E—Universal Dialing Code for National Suicide Prevention and Mental Health Crisis Hotline System (§§ 52.200 - 52.202)
- Appendix to Part 52—Deployment Schedule for Long-Term Database Methods for Local Number Portability