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Local Number Portability Database
Overview
The Local Number Portability (LNP) Database service from CenturyLink lets you directly access an LNP Database to perform your own LNP routing queries, rather than pay higher costs to Local Exchange Carriers (LECs) to route the calls for you.
CenturyLink LNP Database contains routing information for every ported number in the United States and is one of the highest capacity databases in the industry. The volume of queries generated by the CenturyLink family of companies helps CenturyLink provide a cost-effective LNP routing solution for you.
With CenturyLink LNP Database service, you may:
- Perform your own LNP call routing by accessing CenturyLink LNP database, which contains nationwide LNP routing information.
- Obtain customer support, 24 hours a day, 7 days a week.
Features & Benefits
- Nationwide LNP Database routing service - provides Local Routing Number information from one database connected to the CCS/SS7 network for ported numbers in all metropolitan statistical areas in the United States
- Ported number information is received and updated from the Number Portability Administration Center on a realtime basis. Regular audits are performed to verify the information - means accurate routing information for you.
- Eliminates default queries and leverages the economical rates CenturyLink can offer you due to our high volume of LNP Database queries - saves on expenditures.
- No need for you to build and maintain your own LNP database - saves on resources costs.
Product Details
Today, most service providers use Incumbent Local Exchange Carriers (ILECs) as their default provider of LNP routing. As a result, they pay high default query costs to route traffic where number porting is in effect.
CenturyLink LNP Database service offers routing information for every ported number in the United States, making CenturyLink the ideal source for wholesale LNP queries. The volume of queries generated by the CenturyLink family of companies helps CenturyLink provide a cost-effective solution for LNP routing for you. You can profit from the high CenturyLink volume and reduce costs by routing your own calls to the correct end-user customer, rather than relying on ILECs to do it for you.
Before the switch terminates a call to an area that has ported numbers, your switch queries CenturyLink LNP Database. CenturyLink LNP Database service returns a Local Routing Number, which in turn provides your switch with the information needed to terminate the call to the appropriate local switch. This allows you to avoid further LNP database query charges.
Here's how it works:

Business Applications
- CenturyLink Local Number Portability (LNP) Database service reduces costs since it allows you to route your own LNP calls.
- CenturyLink CCS/SS7 product portfolio allows for one-stop-shopping for all database needs including: Caller ID Names (CNAM), Toll-Free Code (800), and LNP Database services.
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