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: 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
979-358 5 Wharton TX HSTNTXPB6MD  560   2012-04-15   
979-421 7 Brenham TX HSTNTXPB6MD  560   2012-04-15   
979-429 8 Bay City TX HSTNTXPB6MD  560   2014-02-19   
980-784 A Charlotte NC CHRLNCRL9MD  422   2026-06-23   
980-784 2 Charlotte NC CHRLNCRL9MD  422   2026-06-23   
983-224 A Denver CO DNVTCO566MD  656   2026-04-28   
983-224 2 Denver CO DNVTCO566MD  656   2026-04-28   
984-412 A Raleigh NC RLGHNCJVXMD  426   2026-06-23   
984-412 5 Raleigh NC RLGHNCJVXMD  426   2026-06-23   

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

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