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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OCN: 321J HD CARRIER LLC

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
980-560 0 Charlotte NC   422   2025-10-05   
980-880 A Charlotte NC CHRONC82DMD  422      
980-880 8 Charlotte NC CHRONC82DMD  422   2020-07-25   
980-880 9 Charlotte NC CHRONC82DMD  422   2020-07-25   
983-226 4 Longmont CO   656   2025-11-27   
983-226 5 Longmont CO   656   2025-11-27   
983-226 6 Longmont CO   656   2025-11-27   
983-777 8 Denver CO DNVRCOMA32Z  656   2023-12-04   
983-888 1 Denver CO DNVRCOMA32Z  656   2023-08-05   
983-999 1 Denver CO DNVRCOMA32Z  656   2023-10-08   
983-999 3 Denver CO DNVRCOMA32Z  656   2023-10-08   
984-404 A Raleigh NC   426   2025-10-05   
984-404 4 Raleigh NC   426   2025-10-05   
984-404 5 Raleigh NC   426   2025-10-05   
984-404 6 Raleigh NC   426   2025-10-05   
984-404 7 Raleigh NC   426   2025-10-05   
984-884 A Raleigh NC RLGHNCHD8MD  426      
984-884 8 Raleigh NC RLGHNCHD8MD  426   2020-08-03   
984-884 9 Raleigh NC RLGHNCHD8MD  426   2020-08-03   
986-201 2 Caldwell ID BOISIDPZAMD  652   2020-09-26   
986-219 A Idaho Falls ID BOISIDPZBMD  652      
986-219 8 Idaho Falls ID BOISIDPZBMD  652   2022-02-11   
986-219 9 Idaho Falls ID BOISIDPZBMD  652   2022-02-11   
986-276 6 Caldwell ID   652   2025-12-04   
986-290 2 Boise ID   652   2025-12-04   
986-299 A Coeur D'Alene ID   960   2025-08-16   
986-299 7 Coeur D'Alene ID   960   2025-08-16   
986-299 8 Coeur D'Alene ID   960   2025-08-16   
986-299 9 Coeur D'Alene ID   960   2025-08-16   
986-800 7 Idaho Falls ID BOISIDPZAMD  652   2020-12-05   
986-996 4 Boise ID   652   2025-12-04   
986-996 9 Boise ID   652   2025-12-04   
989-357 A Bay City MI SGNWMIACFMD  344      
989-357 9 Bay City MI SGNWMIACFMD  344   2020-11-21   

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Last updated: Sat, 15 Nov 2025 03:38:44 UTC

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