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.

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

Block: A

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
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      

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Last updated: Sun, 17 May 2026 03:26:51 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.