Source note · Number porting and LNP workflows
47 CFR 52.21 defines number portability as users keeping their existing numbers at the same location, without impairing quality, reliability or convenience, when switching carriers.
Checked 2026-09-24
- Vendor
- not restricted
- Product
- not restricted
- Subsystem
- definitions
- Deployment
- pstn
- Region
- us
- Release range
- current as of 2026-09-24
- Checked
- 2026-09-24
Sources
- 47 CFR § 52.21 - Definitions — Legal Information Institute (Cornell Law School), reproducing the Code of Federal Regulations · tier 1 standards and regulators · 47 CFR 52.21, definition of number portability
Cite this note
APA
WarmTransfer. (2026, September 24). Number porting and LNP workflows: source note number-porting-us-definition-number-portability. WarmTransfer. https://warmtransfer.net/knowledge/claims/number-porting-us-definition-number-portability
BibTeX
@misc{warmtransfer-claim-number-porting-us-definition-number-portability,
title = {Number porting and LNP workflows: source note number-porting-us-definition-number-portability},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/number-porting-us-definition-number-portability},
note = {Source note number-porting-us-definition-number-portability, checked 2026-09-24}
}