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.

Switch: HSTNTXPB6MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
281-977 A Houston Suburban TX 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 560      
346-556 A Houston TX 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 560      
346-557 A Houston Suburban TX 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 560      
713-487 A Houston TX 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 560      
713-590 A Houston TX 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 560      
713-595 A Houston TX 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 560      
832-224 A Apollo TX 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 560      
832-240 A Apollo TX 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 560      
832-253 A Bammel TX 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 560      
832-321 A Barker TX 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 560      
832-376 A Channelview TX 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 560      
832-429 A Deer Park TX 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 560      
832-481 A Friendswood TX 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 560      
832-529 A Langham Creek TX 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 560      
832-568 A La Porte TX 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 560      
832-637 A Manvel TX 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 560      
832-678 A Satsuma TX 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 560      
832-734 A Sheldon TX 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 560      
832-753 A Seabrook TX 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 560      
832-827 A Westfield TX 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 560      
832-987 A Stafford TX 671J U.S. TELEPACIFIC CORP. DBA TPX COMMUNICATIONS 560      

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

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