# 47 CFR § 51.203: Number portability

> Federal · Regulations · In force

URL: https://www.frixlaw.com/law-library/statutes/ecfr-47-51.203

## Section

- **Citation:** 47 CFR § 51.203
- **Heading:** Number portability
- **Jurisdiction:** Federal
- **Kind:** Regulations
- **Status:** In force
- **Text as of:** September 22, 2026
- **Source:** Publisher's official text
- **Location:** Title 47—Telecommunication > CHAPTER I—FEDERAL COMMUNICATIONS COMMISSION > SUBCHAPTER B—COMMON CARRIER SERVICES > PART 51—INTERCONNECTION > Subpart C—Obligations of All Local Exchange Carriers

## Text

The rules governing number portability are set forth in part 52, subpart C of this chapter.

## Nearby sections

- [47 CFR § 51.1 § 51.1 Basis and purpose.](https://www.frixlaw.com/law-library/statutes/ecfr-47-51.1.md)
- [47 CFR § 51.3 § 51.3 Applicability to negotiated agreements.](https://www.frixlaw.com/law-library/statutes/ecfr-47-51.3.md)
- [47 CFR § 51.5 § 51.5 Terms and definitions.](https://www.frixlaw.com/law-library/statutes/ecfr-47-51.5.md)
- [47 CFR § 51.100 § 51.100 General duty.](https://www.frixlaw.com/law-library/statutes/ecfr-47-51.100.md)
- [47 CFR § 51.201 § 51.201 Resale.](https://www.frixlaw.com/law-library/statutes/ecfr-47-51.201.md)
- [47 CFR § 51.203 § 51.203 Number portability.](https://www.frixlaw.com/law-library/statutes/ecfr-47-51.203.md)
- [47 CFR § 51.205 § 51.205 Dialing parity: General.](https://www.frixlaw.com/law-library/statutes/ecfr-47-51.205.md)
- [47 CFR § 51.207 § 51.207 Local dialing parity.](https://www.frixlaw.com/law-library/statutes/ecfr-47-51.207.md)
- [47 CFR § 51.217 § 51.217 Nondiscriminatory access: Telephone numbers, operator services, directory assistance services, and directory listings.](https://www.frixlaw.com/law-library/statutes/ecfr-47-51.217.md)
- [47 CFR § 51.219 § 51.219 Access to rights of way.](https://www.frixlaw.com/law-library/statutes/ecfr-47-51.219.md)
- [47 CFR § 51.221 § 51.221 Reciprocal compensation.](https://www.frixlaw.com/law-library/statutes/ecfr-47-51.221.md)
- [47 CFR § 51.223 § 51.223 Application of additional requirements.](https://www.frixlaw.com/law-library/statutes/ecfr-47-51.223.md)
- [47 CFR § 51.230 § 51.230 Presumption of acceptability for deployment of an advanced services loop technology.](https://www.frixlaw.com/law-library/statutes/ecfr-47-51.230.md)
- [47 CFR § 51.231 § 51.231 Provision of information on advanced services deployment.](https://www.frixlaw.com/law-library/statutes/ecfr-47-51.231.md)

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Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/ecfr-47-51.203. Check the current official text before relying on it. Not legal advice.