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Dialing Plan Data

Numbering Plan & Dialing Plan Data

Route and rate domestic and international calls accurately, easily.


Industry professionals use KFR’s data to accurately program call routing in switches, identify calls to wireless numbers, determine whether a call is inter or intraLATA and find the rate center for a given NPA-NXX.


Our numbering plan database encompasses assigned NPA-NXXs in the North American Numbering Plan with an option to include dialing plan data for international originations. 

Why Utilize Dialing Plan Data?

Without an accurate, reliable, and continuously updated dialing plan database, your call routing, rating, or reporting efforts may provide insufficient detail, or fail altogether.  New dialing codes are added to the numbering plan at an increasingly fast pace and KFR makes about 800 adds, edits, and deletions to this data each month. Relying on a free website whose accuracy and level of detail are insufficient can result in inaccurate billing and reports that are missing the level of detail needed.

  • Dialing plans include nearly 100,000 assigned dialing codes for worldwide locations.

  • Includes nearly 100,000 dialing codes worldwide.

  • Use this data set to find the terminating city for an international call and determine whether the international dialing code is reserved for wireless services so you’ll know when surcharges apply.

  • Lists all assigned NPA-NXXs in the North American Numbering Plan, enabling you to report the originating or terminating rate center or wire center for a call, determine whether a call is intraLATA or interLATA and find whether the call is placed to or from an area code/prefix assigned to wireless service.

  • New NXXs are added up to 90 days before effective dates and remain in the database 60 days after they’re removed from service for accurate and easier back-billing. NPA-NXX Trac also includes V&H coordinates, operating company code and CLLI Code.

  • Provides the missing link when trying to correlate telecom boundaries with traditional geographic and demographic elements.

  • By obtaining the cross-section of where zip codes and telecom rate centers overlap, Zip-Link allows you to determine the zip code for each area code/prefix combination in the United States.

  • Helps providers assign phone numbers that ensure calls to a customer’s VoIP and wireless phones are local to the numbers they call most.

  • Zip-Tel matches each zip code to an area code and exchange, enabling service providers to assign the right number to meet a subscriber’s specifics needs.

  • With the NPA NXX for a zip code identified, KFR’s Localizer makes determining the local calling area simple and accurate.


Where We Get Our Telecom Data


KFR Services gathers our numbering plan data from a wide variety of reliable industry sources and compiles the disparate formats into a standardized database.  This enables our customers to easily incorporate the information into their own call rating, routing, and reporting applications.

How Our Clients Use Our Dialing Plan Database


Telecom service providers, and their billing vendors, use our numbering plan databases to accurately determine which rate to apply to calls. By finding the calling NPA-NXX and the called NPA-NXX in our database, and comparing the LATA of each, service providers can determine whether a specific call detail record represents an interLATA call or an intraLATA call and apply the proper rate during the bill generation process.  The same logic is used when programming switches to properly route calls based on a look up of the calling and called numbers in our Numbering Plan Database.  


In addition, since our NPA-NXX data includes both the rate center and wire center names, telemanagement reports and bills can include information on from where, and to where, the call was placed.

Our Expertise


KFR Services knows that a high degree of expertise and understanding is needed to properly interpret the various regulatory documents that help define rating and routing in the telecom world.  Our expert staff of rate and tariff analysts has an average tenure with our company of over 20 years.  Our staff’s expertise and longevity enable us to maintain our data to the highest level of accuracy, ensuring that our clients receive reliable numbering plan data each and every time.

Learn More About Our Numbering & Dialing Plan Database!


Contact us today to learn more about how numbering plan databases can improve your processing, leading to more accurate results in your reporting, rating, and routing.

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