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U.S. Code of Federal Regulations

Regulations most recently checked for updates: Oct 07, 2025

All TitlesTitle 47Chapter IPart 51Subpart C - Subpart C—Obligations of All Local Exchange Carriers
§ 51.201 - Resale.
§ 51.203 - Number portability.
§ 51.205 - Dialing parity: General.
§ 51.207 - Local dialing parity.
§ 51.217 - Nondiscriminatory access: Telephone numbers, operator services, directory assistance services, and directory listings.
§ 51.219 - Access to rights of way.
§ 51.221 - Reciprocal compensation.
§ 51.223 - Application of additional requirements.
§ 51.230 - Presumption of acceptability for deployment of an advanced services loop technology.
§ 51.231 - Provision of information on advanced services deployment.
§ 51.232 - Binder group management.
§ 51.233 - Significant degradation of services caused by deployment of advanced services.
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