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.

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
972-433 2 Prosper TX DLLSTXRIY0X  552   2019-06-28   
972-433 3 Prosper TX DLLSTXRIY0X  552   2019-06-28   
972-433 4 Prosper TX DLLSTXRIY0X  552   2019-06-28   
973-613 A Hawthorne NJ   224   2025-05-25   
973-613 5 Hawthorne NJ   224   2026-06-12   
973-613 6 Hawthorne NJ   224   2026-06-12   
973-613 7 Hawthorne NJ   224   2025-05-25   
973-613 8 Hawthorne NJ   224   2025-05-25   
973-613 9 Hawthorne NJ   224   2025-05-25   
973-750 6 Butler NJ PRNYNJFPX0X  224   2019-05-26   
979-286 A Bryan-College Station TX BRYNTXXAY0X  570      
979-286 0 Bryan-College Station TX BRYNTXXAY0X  570   2019-06-06   
979-286 2 Bryan-College Station TX BRYNTXXAY0X  570   2019-05-10   
979-290 A Brenham TX NCGDTXNCX0X  560      
979-290 2 Brenham TX NCGDTXNCX0X  560   2019-05-16   
979-383 1 Bryan-College Station TX   570   2026-06-12   
979-867 0 Bryan-College Station TX   570   2026-06-12   
980-316 A Charlotte NC CHRLNCCAYLX  422      
980-316 2 Charlotte NC CHRLNCCAYLX  422   2020-07-11   
984-520 A Goldsboro NC RLGHNCHOY0X  426      
984-520 0 Goldsboro NC RLGHNCHOY0X  426   2019-07-04   
984-520 1 Goldsboro NC RLGHNCHOY0X  426   2019-07-04   
984-520 2 Goldsboro NC RLGHNCHOY0X  426   2019-05-12   
989-318 A Bay City MI SGNWMIFAY0X  344      
989-318 2 Bay City MI SGNWMIFAY0X  344   2020-08-24   

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Last updated: Tue, 16 Jun 2026 00:09:45 UTC

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