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2. RespOrg - Wikipedia

   en.wikipedia.org/wiki/RespOrg

   A "data base communication call processing method" [2] patented by Roy P. Weber of Bell Labs, and implemented by AT&T in 1982, broke the link between individual telephone numbers and a specific trunk, city, or carrier. A toll-free number was merely an index into a large, distributed database; any number could be reassigned geographically ...

3. 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 ...

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 number portability - Wikipedia

   en.wikipedia.org/wiki/Toll-free_number_portability

   The industry established a body, Industry Number Management Services (INMS) Ltd, to allocate individual numbers and administer the centralised reference database of all allocated local rate and freephone numbers. [1] Vanity numbers, such as phonewords or short 13- series shared-cost service numbers, are made available by auction.

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

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

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

7. Identify any mystery caller for free with this phone number ...

   www.aol.com/news/identify-mystery-caller-free...

   The TruePeopleSearch.com website works for landline and cellphone numbers, allowing you to do a reverse phone lookup for any type of phone number. Identify any mystery caller for free with this ...

8. How to Do a Free Reverse Phone Lookup & the 8 Best ... - AOL

   www.aol.com/free-reverse-phone-lookup-8...

   Spy Dialer is a free reverse phone lookup service that accesses public databases of registered phone numbers to help users find information on cell phone and landline numbers and emails.

9. 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 ]