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.
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NPA: 206 [Rate centres in NPA 206] [Dial plan for NPA 206]

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
206-996 A Seattle WA STTLWA06X8X  6630 USA MOBILITY WIRELESS, INC. 674      
206-997 A Seattle WA STTLWA06DS4  9638 QWEST CORPORATION 674      
206-998 A Seattle WA STTLWA06DS4  9638 QWEST CORPORATION 674      
206-999 A Seattle WA STTLWAGAAMD  5812 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WA 674      

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Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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