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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]
The terminating carrier performs a database lookup using the caller's phone number to obtain the name information to display with Caller ID. If the data is with another carrier, then the terminating carrier must perform a lookup and pay a small "dip fee" to the carrier hosting the information. [ 3 ]
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 ...
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. You might ...
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 ...
Some forms of city directories provide this form of lookup for listed services by phone number, along with address cross-referencing. Publicly accessible reverse telephone directories may be provided as part of the standard directory services from the telecommunications carrier in some countries.
If the Service Management System were a central registry that controlled routing on all toll-free and other telephone numbers, the RespOrgs would be its registrars. Many RespOrgs are telephone companies or long-distance carriers; a toll-free number provided by a carrier is bundled with RespOrg service adequate to send all calls through that one ...
The interexchange carrier to which calls from a subscriber line are routed by default is known as the presubscribed interexchange carrier (PIC). To give telephone users the possibility of opting for a different carrier on a call-by-call basis, carrier access codes (CAC) were devised. These consist of the digits 101 followed by the four-digit CIC.