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: 425 [Rate centres in NPA 425] [Dial plan for NPA 425]

<< 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 85 86 87 88 89 90 91 92 93 >>

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
425-331 5 Issaquah WA STTLWA03XMD  624H ONVOY SPECTRUM, LLC 674   2020-07-09   
425-331 6 Issaquah WA STTLWA03XMD  624H ONVOY SPECTRUM, LLC 674   2020-07-09   
425-331 7 Issaquah WA STTLWA03XMD  624H ONVOY SPECTRUM, LLC 674   2020-07-09   
425-331 8 Issaquah WA STTLWA03XMD  624H ONVOY SPECTRUM, LLC 674   2020-07-09   
425-331 9 Issaquah WA STTLWAWBX7Z  006F BANDWIDTH.COM CLEC, LLC - WA 674   2020-06-20   
425-332 A Silver Lake WA STTLWAWBDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 674      
425-332 0 Silver Lake WA TACNWADNCM6  6010 NEW CINGULAR WIRELESS PCS, LLC 674   2021-04-19   
425-332 1 Silver Lake WA STTLWAWBDS1  483E ONVOY, LLC - WA 674   2010-03-23   
425-332 2 Silver Lake WA STTLWA03X1X  318J COMCAST IP PHONE, LLC 674   2011-10-01   
425-332 3 Silver Lake WA STTLWA03X1X  318J COMCAST IP PHONE, LLC 674   2014-06-05   
425-332 4 Silver Lake WA STTLWAWBX7Z  006F BANDWIDTH.COM CLEC, LLC - WA 674   2016-02-12   
425-332 5 Silver Lake WA STTLWAWBX7Z  006F BANDWIDTH.COM CLEC, LLC - WA 674   2017-02-27   
425-332 6 Silver Lake WA STTLWAWBDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 674      
425-332 7 Silver Lake WA STTLWAWBDS1  483E ONVOY, LLC - WA 674   2007-06-04   
425-332 8 Silver Lake WA PLSBWAXXX0X  6010 NEW CINGULAR WIRELESS PCS, LLC 674   2025-01-19   
425-332 9 Silver Lake WA STTLWAWBDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 674      
425-333 A Carnation WA CRNTWAXXRS0  2408 CENTURYTEL OF WASHINGTON, INC. DBA CENTURYLINK 674      
425-333 0 Carnation WA CRNTWAXXRS0  2408 CENTURYTEL OF WASHINGTON, INC. DBA CENTURYLINK 674      
425-333 1 Carnation WA STTLWAWBDSH  159F PEERLESS NETWORK OF WASHINGTON, LLC - WA 674   2018-11-09   
425-333 2 Carnation WA STTLWAWBDS1  483E ONVOY, LLC - WA 674   2019-01-18   
425-333 3 Carnation WA STTLWAWBDSH  159F PEERLESS NETWORK OF WASHINGTON, LLC - WA 674   2011-10-27   
425-333 4 Carnation WA CRNTWAXXRS0  2408 CENTURYTEL OF WASHINGTON, INC. DBA CENTURYLINK 674      
425-333 5 Carnation WA CRNTWAXXRS0  2408 CENTURYTEL OF WASHINGTON, INC. DBA CENTURYLINK 674      
425-333 6 Carnation WA CRNTWAXXRS0  2408 CENTURYTEL OF WASHINGTON, INC. DBA CENTURYLINK 674      
425-333 7 Carnation WA STTLWAWBDS1  483E ONVOY, LLC - WA 674   2007-01-15   
425-333 8 Carnation WA STTLWAWBDS1  483E ONVOY, LLC - WA 674   2012-01-30   
425-333 9 Carnation WA PTORWACYDS0  937F ASTOUND BROADBAND, LLC - WA 674   2012-04-29   
425-334 A Everett WA LKSTWAXADS1  4324 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 674      
425-335 A Everett WA LKSTWAXADS1  4324 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 674      
425-336 A Renton WA STTNWAHODSC  6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674      
425-336 0 Renton WA STTNWAHODSC  6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674   2005-01-13   
425-336 1 Renton WA STTNWAHODSC  6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674   2005-06-11   
425-336 2 Renton WA STTNWAHODSC  6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674   2005-06-11   
425-336 3 Renton WA STTNWAHODSC  6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674   2005-06-11   
425-336 4 Renton WA STTNWAHODSC  6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674      
425-336 5 Renton WA TKWLWAZSPS0  7173 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 674   2009-10-03   
425-336 6 Renton WA TKWLWAZSPS0  7173 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 674   2003-05-05   
425-336 7 Renton WA STTNWAHODSC  6121 LEVEL 3 COMMUNICATIONS, LLC - WA 674   2010-09-24   
425-336 8 Renton WA STTLWA060MD  6529 T-MOBILE USA, INC. 674   2020-06-05   
425-336 9 Renton WA TACNWADNCM6  6010 NEW CINGULAR WIRELESS PCS, LLC 674   2016-07-07   
425-337 A Silver Lake WA SLLKWAXADS1  4324 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 674      
425-338 A Silver Lake WA SLLKWAXADS1  4324 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 674      
425-339 A Everett WA EVRTWAXAPS3  4324 ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER 674      
425-340 A Issaquah WA STTLWA060MD  6529 T-MOBILE USA, INC. 674      
425-340 0 Issaquah WA STTLWA060MD  6529 T-MOBILE USA, INC. 674   2022-02-05   
425-340 1 Issaquah WA STTLWA060MD  6529 T-MOBILE USA, INC. 674   2022-02-05   
425-340 2 Issaquah WA STTLWA060MD  6529 T-MOBILE USA, INC. 674   2022-02-05   
425-340 3 Issaquah WA STTLWAWBDS1  483E ONVOY, LLC - WA 674   2022-12-12   
425-340 4 Issaquah WA STTLWA060MD  6529 T-MOBILE USA, INC. 674   2022-07-29   
425-340 5 Issaquah WA STTLWA060MD  6529 T-MOBILE USA, INC. 674   2022-07-29   

<< 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 85 86 87 88 89 90 91 92 93 >>

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.