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: PLSBWAXXX0X

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
564-645 4 Poulsbo WA 6010 NEW CINGULAR WIRELESS PCS, LLC 674   2024-12-12   
564-645 7 Poulsbo WA 6010 NEW CINGULAR WIRELESS PCS, LLC 674   2024-12-12   
564-645 8 Poulsbo WA 6010 NEW CINGULAR WIRELESS PCS, LLC 674   2024-12-12   
564-645 9 Poulsbo WA 6010 NEW CINGULAR WIRELESS PCS, LLC 674   2024-09-15   
564-676 5 Oak Harbor WA 6010 NEW CINGULAR WIRELESS PCS, LLC 674   2024-08-03   
564-676 7 Oak Harbor WA 6010 NEW CINGULAR WIRELESS PCS, LLC 674   2022-08-28   

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Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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