Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • 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.

Switch: SCTNPASCX4Y

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
570-996 6 Tunkhannock PA 4007 LEVEL 3 COMMUNICATIONS, LLC - PA 232   2009-10-02   
570-998 4 Trout Run PA 4007 LEVEL 3 COMMUNICATIONS, LLC - PA 232   2005-03-12   
610-379 4 Lehighton PA 4007 LEVEL 3 COMMUNICATIONS, LLC - PA 232   2005-08-15   
814-264 7 Howard PA 4007 LEVEL 3 COMMUNICATIONS, LLC - PA 232   2016-01-28   
814-469 8 Zion PA 4007 LEVEL 3 COMMUNICATIONS, LLC - PA 232   2023-03-04   

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Last updated: Tue, 16 Jun 2026 00:09:45 UTC

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