Telephone number portability can refer to:
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Mobile number portability
Mobile number portability (MNP) enables mobile phone users to retain a mobile telephone number when changing the mobile network operator.
Overview
Mobile number portability (MNP) allows people to keep their phone numbers when switching to a ne ...
- telephone number portability for mobile phone users.
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Local number portability
Local number portability (LNP) for fixed lines, and full mobile number portability (FMNP) for mobile phone lines, refers to the ability of a "customer of record" of an existing fixed-line or mobile telephone number assigned by a local exchange c ...
- telephone number portability for landline users.
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Toll-free number portability
Toll-free number portability (Canada, US, New Zealand) or freephone number portability (Australia, UK) allows the subscriber of a freephone number to switch providers while retaining the same number for incoming calls. Similar schemes exist in man ...
- telephone number portability for freephone subscribers.
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