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
248-201 A Southfield MI SFLDMIMKMMD  340      
248-201 0 Southfield MI SFLDMIMKMMD  340   2023-10-16   
380-278 A Columbus OH CLMDOH44X0X  324   2024-08-11   
380-278 3 Columbus OH CLMDOH44X0X  324   2024-08-11   
417-482 A Springfield MO SPFDMOMCX3Y  522   2024-12-08   
417-482 3 Springfield MO SPFDMOMCX3Y  522   2024-12-08   
517-275 8 Lansing MI LNNGMIDCOMD  346   2024-11-27   
557-999 A Sappington MO STLSMOGZSMD  520      
557-999 7 Sappington MO STLSMOGZSMD  520   2023-05-13   
572-777 A Harrah OK OKCYOKCE23Z  536      
572-777 1 Harrah OK OKCYOKCE23Z  536   2023-05-13   
616-370 A Grand Rapids MI BRSPMI09FMD  348      
616-370 0 Grand Rapids MI BRSPMI09FMD  348   2023-10-16   
726-247 A San Antonio TX SNANTXCAY8X  566   2024-09-15   
726-247 8 San Antonio TX SNANTXCAY8X  566   2024-09-15   
816-660 A Kansas City MO KSCYMO5504Z  524   2024-12-21   
816-660 8 Kansas City MO KSCYMO5504Z  524   2024-12-21   
904-934 A Jacksonville FL JCVLFLCLYDY  45204   2024-07-18   
904-934 0 Jacksonville FL JCVLFLCLYDY  45204   2024-07-18   
912-815 A Savannah GA SVNHGAOBX5X  440   2024-11-11   
912-815 5 Savannah GA SVNHGAOBX5X  440   2024-11-11   
943-269 A Atlanta GA ATLNGAMQXMX  438   2024-10-07   
943-269 4 Atlanta GA ATLNGAMQXMX  438   2024-10-07   
945-350 A Dallas TX DLLSTX97XVX  552   2024-11-02   
945-350 1 Dallas TX DLLSTX97XVX  552   2024-11-02   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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