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      • You can view information for a code by entering the “NPANXX” (no hyphens) into the primary search bar in Network. This will return to you the code, assigned date, assigned SPID/OCN, as well as the LATA, state, and rate center the code is associated with.
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  2. This lookup uses the North American NPA NXX Wire Center Edition Database and supplemental data to find the Wire Center, Rate Center, locality, LATA, carrier, and other details associated with any United States or Canadian NPA NXX combination.

  3. Lookup any area code by area code, prefix, city, state, zip code, county or any of the fields shown above. Only one field needs to be entered but you can filter the results by entering information in additional fields.

  4. Apr 16, 2024 · Area code/prefix search. Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information. If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

  5. Search by NPA and NXX, State and City or by LATA. Select from several options below. KFR's free NPA-NXX lookup is great for checking which area codes and prefixes are assigned to a given rate center, what rate center a particular NPA-NXX is in or what area codes are in a specific state.

  6. NPA (Area) Codes. The area served by the NANP is divided into smaller Numbering Plan Areas (NPAs), each identified by a three-digit NPA code, commonly called an area code. For quick information about a specific area code, use the area code search.

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