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.

Seattle, WA

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
206-360 5 STTLWAWBDS1  483E ONVOY, LLC - WA 674   2022-05-04   
206-360 6 STTLWAWBDS1  483E ONVOY, LLC - WA 674   2022-05-04   
206-360 7 STTLWAWBDS1  483E ONVOY, LLC - WA 674   2022-05-04   
206-360 8 STTLWAWBDS1  483E ONVOY, LLC - WA 674   2022-05-04   
206-360 9 STTLWAWBDS1  483E ONVOY, LLC - WA 674   2022-05-04   
206-361 A STTLWA04DS0  9638 QWEST CORPORATION 674      
206-362 A STTLWA04DS0  9638 QWEST CORPORATION 674      
206-363 A STTLWA04DS0  9638 QWEST CORPORATION 674      
206-364 A STTLWA04DS0  9638 QWEST CORPORATION 674      
206-365 A STTLWA04DS0  9638 QWEST CORPORATION 674      
206-366 A STTLWA04DS0  9638 QWEST CORPORATION 674      
206-366 0 STTLWA04DS0  9638 QWEST CORPORATION 674      
206-366 1 STTLWA04DS0  9638 QWEST CORPORATION 674      
206-366 2 STTLWA04DS0  9638 QWEST CORPORATION 674      
206-366 3 STTLWA04DS0  9638 QWEST CORPORATION 674      
206-366 4 STTLWA04DS0  9638 QWEST CORPORATION 674      
206-366 5 STTLWA060MD  6529 T-MOBILE USA, INC. 674   2004-12-12   
206-366 6 STTLWA04DS0  9638 QWEST CORPORATION 674      
206-366 7 STTLWA04DS0  9638 QWEST CORPORATION 674      
206-366 8 STTLWA04DS0  9638 QWEST CORPORATION 674      
206-366 9 STTLWA04DS0  9638 QWEST CORPORATION 674      
206-367 A STTLWA04DS0  9638 QWEST CORPORATION 674      
206-368 A STTLWA04DS0  9638 QWEST CORPORATION 674      
206-369 A PLSBWAXXX0X  6010 NEW CINGULAR WIRELESS PCS, LLC 674      
206-370 A STTLWA06DS6  9638 QWEST CORPORATION 674      
206-370 0 STTLWA060MD  6529 T-MOBILE USA, INC. 674   2005-02-27   
206-370 1 STTLWA060MD  6529 T-MOBILE USA, INC. 674   2005-02-27   
206-370 2 STTLWA060MD  6529 T-MOBILE USA, INC. 674   2005-02-27   
206-370 3 STTLWA06DS6  9638 QWEST CORPORATION 674      
206-370 4 STTLWA060MD  6529 T-MOBILE USA, INC. 674   2005-10-01   
206-370 5 STTLWA06DS6  9638 QWEST CORPORATION 674      
206-370 6 STTLWA06DS6  9638 QWEST CORPORATION 674      
206-370 7 STTLWA06DS6  9638 QWEST CORPORATION 674      
206-370 8 STTLWA06DS6  9638 QWEST CORPORATION 674      
206-370 9 STTLWA060MD  6529 T-MOBILE USA, INC. 674   2006-06-08   
206-371 A STTLWA060MD  6529 T-MOBILE USA, INC. 674      
206-371 0 STTLWA060MD  6529 T-MOBILE USA, INC. 674      
206-371 1 STTLWA060MD  6529 T-MOBILE USA, INC. 674      
206-371 2 STTLWA060MD  6529 T-MOBILE USA, INC. 674   2005-09-01   
206-371 3 STTLWA060MD  6529 T-MOBILE USA, INC. 674   2005-09-01   
206-371 4 STTLWA060MD  6529 T-MOBILE USA, INC. 674   2005-09-01   
206-371 5 STTLWA060MD  6529 T-MOBILE USA, INC. 674      
206-371 6 STTLWA060MD  6529 T-MOBILE USA, INC. 674      
206-371 7 STTLWA060MD  6529 T-MOBILE USA, INC. 674      
206-371 8 STTLWA060MD  6529 T-MOBILE USA, INC. 674      
206-371 9 STTLWA060MD  6529 T-MOBILE USA, INC. 674      
206-372 A STTLWA060MD  6529 T-MOBILE USA, INC. 674      
206-373 A STTLWA06DS6  9638 QWEST CORPORATION 674      
206-373 0 STTLWA06DS6  9638 QWEST CORPORATION 674      
206-373 1 STTLWA060MD  6529 T-MOBILE USA, INC. 674   2005-10-08   

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 >>

Last updated: Sat, 02 May 2026 12:20:53 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.