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: PHLAPAMKGMD

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
610-893 0 Philadelphia Suburban Zone 28 PA 551G NUSO, LLC 228   2018-11-07   
610-893 8 Philadelphia Suburban Zone 28 PA 551G NUSO, LLC 228   2018-11-07   
610-922 0 Philadelphia Suburban Zone 25 PA 551G NUSO, LLC 228   2018-11-07   
610-922 3 Philadelphia Suburban Zone 25 PA 551G NUSO, LLC 228   2016-09-23   
610-922 5 Philadelphia Suburban Zone 25 PA 551G NUSO, LLC 228   2016-09-23   
610-922 9 Philadelphia Suburban Zone 25 PA 551G NUSO, LLC 228   2018-11-07   
610-936 A Bethlehem PA 551G NUSO, LLC 228      
610-936 1 Bethlehem PA 551G NUSO, LLC 228   2018-09-01   
610-957 0 Philadelphia Suburban Zone 14 PA 551G NUSO, LLC 228   2016-09-23   
610-957 1 Philadelphia Suburban Zone 14 PA 551G NUSO, LLC 228   2016-09-23   

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Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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