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.

OCN: 425J CSC WIRELESS, LLC

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
406-409 A Billings MT BLNGMTASX0X  650      
406-409 2 Billings MT BLNGMTASX0X  650   2019-07-20   
409-257 A Beaumont TX BUMTTXTEY0X  562      
409-257 2 Beaumont TX BUMTTXTEY0X  562   2020-08-03   
413-361 A Springfield MA SPFDMAWOY0X  126      
413-361 2 Springfield MA SPFDMAWOY0X  126   2020-04-17   
417-412 A Branson MO BASNMOXAY0X  522      
417-412 0 Branson MO BASNMOXAY0X  522   2019-07-15   
417-412 1 Branson MO BASNMOXAY0X  522   2019-07-15   
417-412 2 Branson MO BASNMOXAY0X  522   2019-05-12   
417-412 3 Branson MO BASNMOXAY0X  522   2019-07-15   
423-654 A Chattanooga TN CHTGTNNSY0X  472      
423-654 2 Chattanooga TN CHTGTNNSY0X  472   2020-09-11   
423-656 A Johnson City TN JHCYTNXCY0X  956      
423-656 2 Johnson City TN JHCYTNXCY0X  956   2020-09-21   
430-271 A Gladewater TX LGVWTXPLY0X  554      
430-271 2 Gladewater TX LGVWTXPLY0X  554   2019-05-16   
430-322 1 Paris TX DLLSTXRIY0X  552   2023-11-13   
430-322 8 Paris TX DLLSTXRIY0X  552   2023-11-13   
430-382 A Gladewater TX LGVWTXPLY0X  554   2025-05-22   
430-382 0 Gladewater TX LGVWTXPLY0X  554   2025-05-22   
430-382 1 Gladewater TX LGVWTXPLY0X  554   2025-05-22   
430-382 2 Gladewater TX LGVWTXPLY0X  554   2025-05-22   
430-444 0 Paris TX DLLSTXRIY0X  552   2019-06-15   
430-444 1 Paris TX DLLSTXRIY0X  552   2019-06-15   
430-444 2 Paris TX DLLSTXRIY0X  552   2019-07-01   
430-702 6 Gladewater TX LGVWTXPLY0X  554   2025-04-21   
432-228 1 Midland TX MDLDTXMUY0X  542   2026-06-12   
432-256 A Midland TX MDLDTXMUY0X  542      
432-256 0 Midland TX MDLDTXMUY0X  542   2019-07-04   
432-256 1 Midland TX MDLDTXMUY0X  542   2019-07-04   
432-256 2 Midland TX MDLDTXMUY0X  542   2019-05-16   
432-256 6 Midland TX MDLDTXMUY0X  542   2026-06-11   
434-232 A Lynchburg VA LYBGVACHY0X  250      
434-232 2 Lynchburg VA LYBGVACHY0X  250   2020-04-10   
434-235 A Charlottesville VA CHVLVAXAY0X  928      
434-235 2 Charlottesville VA CHVLVAXAY0X  928   2020-08-28   
442-308 A June Lake CA VTVLCAXAY0X  730      
442-308 2 June Lake CA VTVLCAXAY0X  730   2019-05-10   
442-315 A Palm Springs CA PLSPCAXGY0X  973      
442-315 2 Palm Springs CA PLSPCAXGY0X  973   2020-04-10   
442-326 4 Independence CA VTVLCAXAY0X  730   2019-06-06   
458-250 A Eugene OR EUGNOR53Y0X  670      
458-250 2 Eugene OR EUGNOR53Y0X  670   2020-09-02   
469-722 A Dallas TX DLLSTXRIY0X  552      
469-722 2 Dallas TX DLLSTXRIY0X  552   2019-05-16   
470-571 A Atlanta GA ATLNGAQSY0X  438      
470-571 2 Atlanta GA ATLNGAQSY0X  438   2019-07-20   
475-257 A Norwalk CT NRWLCT02Y0X  920      
475-257 0 Norwalk CT NRWLCT02Y0X  920   2019-06-06   

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Last updated: Tue, 01 Sep 2026 00:40:05 UTC

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