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  2. Toll-free number portability - Wikipedia

    en.wikipedia.org/wiki/Toll-free_number_portability

    The TNAS System is a database for co-ordination of allocation and porting of toll-free numbers and is used by nine carriers. [5] A client may switch service providers, or a service provider switch host carriers, without a change in the published toll-free number.

  3. Mobile number portability - Wikipedia

    en.wikipedia.org/wiki/Mobile_number_portability

    The process to port to CDMA networks will begin as soon as the GSM porting process is completed and launched. Mobile Number Portability will initially be available among the GSM mobile operators: MTN, GLOBACOM, ETISALAT, and AIRTEL. Number Portability Clearinghouse services were previously handled by iconectiv. [80] Oman: 2006.08.26

  4. Local number portability - Wikipedia

    en.wikipedia.org/wiki/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 carrier (LEC) to reassign the number to another carrier ("service provider portability"), move it to another location ("geographic portability"), or ...

  5. Toll-free telephone numbers in the North American Numbering ...

    en.wikipedia.org/wiki/Toll-free_telephone...

    The original 800-code operated for over thirty years before its 7.8 million possible numbers were depleted, but new toll-free area codes are being depleted at an increasing rate both by more widespread use of the numbers by voice-over-IP, pocket pagers, residential, and small business use, and response tracking for individual advertisements ...

  6. 30 Scam Phone Numbers To Block and Area Codes To Avoid - AOL

    www.aol.com/finance/19-dangerous-scam-phone...

    Here's a list of scammer phone numbers and area codes to avoid answering if you don't know exactly who's calling. ... 877 numbers are toll-free numbers often used by businesses and organizations ...

  7. Number Portability Administration Center - Wikipedia

    en.wikipedia.org/wiki/Number_Portability...

    The Number Portability Administration Center (NPAC) is a function of the Federal Communications Commission (FCC) in the United States. It administers the routing of telephone calls and text messages (SMS) for the telecommunications industry and its customers in the regions of the North American Numbering Plan . [ 1 ]

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