Subpart B - ADMINISTRATION
- Section 52.7 - Definitions
- Section 52.9 - General requirements
- Section 52.11 - North American Numbering Council
- Section 52.12 - North American Numbering Plan Administrator and B&C Agent
- Section 52.13 - North American Numbering Plan Administrator
- Section 52.15 - Central office code administration
- Section 52.16 - Billing and Collection Agent
- Section 52.17 - Costs of number administration
- Section 52.19 - Area code relief