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: 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
832-753 2 Seabrook TX HSTNTXPB6MD  560      
832-789 7 Valley Lodge TX HSTNTXPB6MD  560   2012-04-15   
832-827 A Westfield TX HSTNTXPB6MD  560      
832-827 5 Westfield TX HSTNTXPB6MD  560      
832-987 A Stafford TX HSTNTXPB6MD  560      
832-987 9 Stafford TX HSTNTXPB6MD  560      
832-989 5 Stafford TX HSTNTXPB6MD  560   2014-03-31   
838-305 A Ballston Spa NY ALBYNYVP3MD  134   2026-05-26   
838-305 7 Ballston Spa NY ALBYNYVP3MD  134   2026-05-26   
839-341 A Columbia SC CLMASCSN47Z  434   2026-07-21   
839-341 2 Columbia SC CLMASCSN47Z  434   2026-07-21   
854-306 A Charleston SC CHTNSCDT39Z  436   2026-05-26   
854-306 7 Charleston SC CHTNSCDT39Z  436   2026-05-26   
857-226 A Newton MA CHTWMABF2MD  128      
857-226 5 Newton MA CHTWMABF2MD  128   2006-05-29   
857-242 A Cambridge MA CHTWMABF2MD  128      
857-242 5 Cambridge MA CHTWMABF2MD  128   2011-12-15   
857-284 4 Boston MA CHTWMABF2MD  128   2009-09-08   
857-320 6 Cambridge MA CHTWMABF2MD  128   2015-03-30   
857-361 3 Brookline MA CHTWMABF2MD  128   2017-04-14   
857-378 4 Boston MA CHTWMABF2MD  128   2017-04-10   
857-386 5 Chelsea MA CHTWMABF2MD  128   2017-04-14   
857-410 5 Charlestown MA CHTWMABF2MD  128   2017-04-14   
857-416 A Boston MA CHTWMABF2MD  128      
857-416 6 Boston MA CHTWMABF2MD  128   2023-01-24   
857-416 7 Boston MA CHTWMABF2MD  128   2023-01-24   
857-416 8 Boston MA CHTWMABF2MD  128   2023-01-24   
857-418 A Dorchester MA CHTWMABF2MD  128      
857-418 6 Dorchester MA CHTWMABF2MD  128   2023-01-24   
857-703 5 Hyde Park MA CHTWMABF2MD  128   2017-04-14   
858-200 A La Jolla CA SNDKCA882MD  732      
858-200 0 La Jolla CA SNDKCA882MD  732      
858-200 1 La Jolla CA SNDKCA882MD  732      
858-200 2 La Jolla CA SNDKCA882MD  732      
858-200 3 La Jolla CA SNDKCA882MD  732      
858-200 8 La Jolla CA SNDKCA882MD  732      
858-200 9 La Jolla CA SNDKCA882MD  732      
858-210 3 La Jolla CA SNDKCA882MD  732   2008-10-19   
858-210 4 La Jolla CA SNDKCA882MD  732   2008-11-17   
858-216 A Rancho Penasquitos CA SNDKCA882MD  732      
858-216 9 Rancho Penasquitos CA SNDKCA882MD  732      
858-217 A Rancho Bernardo CA SNDKCA882MD  732      
858-217 0 Rancho Bernardo CA SNDKCA882MD  732      
858-217 1 Rancho Bernardo CA SNDKCA882MD  732      
858-217 2 Rancho Bernardo CA SNDKCA882MD  732      
858-217 3 Rancho Bernardo CA SNDKCA882MD  732      
858-217 8 Rancho Bernardo CA SNDKCA882MD  732      
858-217 9 Rancho Bernardo CA SNDKCA882MD  732      
858-218 A Poway CA SNDKCA882MD  732      
858-218 1 Poway CA SNDKCA882MD  732      

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Last updated: Tue, 29 Sep 2026 03:00:13 UTC

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