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: SLDLWASIDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
360-204 A Silverdale WA 9638 QWEST CORPORATION 674      
360-204 7 Silverdale WA 9638 QWEST CORPORATION 674      
360-307 A Silverdale WA 9638 QWEST CORPORATION 674      
360-308 A Silverdale WA 9638 QWEST CORPORATION 674      
360-337 A Silverdale WA 9638 QWEST CORPORATION 674      
360-337 1 Silverdale WA 9638 QWEST CORPORATION 674      
360-337 2 Silverdale WA 9638 QWEST CORPORATION 674      
360-337 3 Silverdale WA 9638 QWEST CORPORATION 674      
360-337 4 Silverdale WA 9638 QWEST CORPORATION 674      
360-337 5 Silverdale WA 9638 QWEST CORPORATION 674      
360-337 6 Silverdale WA 9638 QWEST CORPORATION 674      
360-337 7 Silverdale WA 9638 QWEST CORPORATION 674      
360-337 8 Silverdale WA 9638 QWEST CORPORATION 674      
360-613 A Silverdale WA 9638 QWEST CORPORATION 674      
360-662 A Silverdale WA 9638 QWEST CORPORATION 674      
360-662 0 Silverdale WA 9638 QWEST CORPORATION 674      
360-662 1 Silverdale WA 9638 QWEST CORPORATION 674      
360-662 2 Silverdale WA 9638 QWEST CORPORATION 674      
360-662 4 Silverdale WA 9638 QWEST CORPORATION 674      
360-662 5 Silverdale WA 9638 QWEST CORPORATION 674      
360-662 7 Silverdale WA 9638 QWEST CORPORATION 674   2003-08-25   
360-662 8 Silverdale WA 9638 QWEST CORPORATION 674      
360-662 9 Silverdale WA 9638 QWEST CORPORATION 674      
360-692 A Silverdale WA 9638 QWEST CORPORATION 674      
360-698 A Silverdale WA 9638 QWEST CORPORATION 674      
564-240 A Silverdale WA 9638 QWEST CORPORATION 674      
564-240 1 Silverdale WA 9638 QWEST CORPORATION 674   2018-08-16   
564-240 2 Silverdale WA 9638 QWEST CORPORATION 674   2018-08-16   
564-240 3 Silverdale WA 9638 QWEST CORPORATION 674   2018-08-16   
564-240 4 Silverdale WA 9638 QWEST CORPORATION 674   2018-08-16   
564-240 5 Silverdale WA 9638 QWEST CORPORATION 674   2018-08-16   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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