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: 7421 AT&T - LOCAL

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
973-251 1 Livingston NJ   224      
973-251 3 Livingston NJ   224      
973-264 A Madison NJ NWRKNJ02Y8X  224      
973-264 2 Madison NJ   224      
973-265 A Boonton NJ RCPKNJ02XGY  224      
973-265 3 Boonton NJ   224      
973-287 A Caldwell NJ NWRKNJ02Y8X  224      
973-287 1 Caldwell NJ   224      
973-337 A Bloomfield NJ RCPKNJ02XGY  224      
973-337 4 Bloomfield NJ   224      
973-339 A Little Falls NJ CDKNNJCKAMD  224      
973-339 2 Little Falls NJ   224      
973-341 A Paterson NJ CDKNNJCKAMD  224      
973-341 8 Paterson NJ   224      
973-348 A Bernardsville NJ RCPKNJ02XGY  224      
973-348 1 Bernardsville NJ   224      
973-355 A Morristown NJ RCPKNJ02XGY  224      
973-355 9 Morristown NJ   224      
973-406 A Mountain View NJ CDKNNJCKAMD  224      
973-406 3 Mountain View NJ   224      
973-446 4 Netcong NJ   224   2003-02-17   
973-602 A Whippany NJ NWRKNJ02Y8X  224      
973-602 1 Whippany NJ   224      
973-607 A Dover NJ NWRKNJ02Y8X  224      
973-607 5 Dover NJ   224      
973-637 A Whippany NJ NWRKNJ02Y8X  224      
973-637 5 Whippany NJ   224      
973-637 9 Whippany NJ   224      
973-647 A Morristown NJ RCPKNJ02XGY  224      
973-647 1 Morristown NJ   224      
973-820 A Newark NJ RCPKNJ02XGY  224      
973-820 0 Newark NJ   224      
973-820 2 Newark NJ   224      
975-205 A Adrian MO   524   2026-01-15   
975-205 9 Adrian MO   524   2026-01-15   
978-541 A Athol MA WRCSMACEWMD  128      
978-541 9 Athol MA   128   2012-08-09   
978-637 A Maynard MA FRMNMAWADS1  128      
978-637 9 Maynard MA   128      
978-723 A Maynard MA FRMNMAWADS0  128      
978-723 2 Maynard MA   128      
984-336 A Chapel Hill NC RLGHNCMOXXZ  426      
984-336 9 Chapel Hill NC   426   2023-08-29   
985-332 A Angie LA NWORLAMAYBX  490      
985-332 9 Angie LA   490   2019-09-02   
985-360 A Houma LA NWORLAMAYBX  490      
985-360 4 Houma LA   490   2004-01-26   
985-520 3 Hammond LA   490   2004-01-26   
985-635 3 Covington LA   490   2002-11-27   
986-212 A Emmett ID BOISIDMAXWY  652      
986-212 9 Emmett ID   652   2021-12-23   
986-272 A Nu Acres ID BOISIDMAXZY  652   2024-02-22   
986-272 9 Nu Acres ID   652   2024-02-22   
989-492 A Midland MI SGNWMIFAXMD  344      
989-492 9 Midland MI   344      

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Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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