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: 7421 AT&T - LOCAL

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
256-499 9 Anniston AL OXFRAL991MD  476      
256-620 A Cullman AL HNVIAL964MD  477      
256-620 9 Cullman AL HNVIAL964MD  477   2004-01-01   
256-660 4 Albertville AL BRHMALMTYWX  476   2005-08-29   
256-724 5 Madison AL HNVIAL96X4X  477   2007-06-18   
256-795 A Athens AL HNVIAL96X4X  477      
256-795 9 Athens AL HNVIAL96X4X  477   2020-06-08   
256-898 A Decatur AL HNVIAL96X4X  477      
256-898 9 Decatur AL HNVIAL96X4X  477      
262-382 A Thiensville WI WKSHWI02BMD  356      
262-382 9 Thiensville WI WKSHWI02BMD  356   2021-12-17   
269-216 A Kalamazoo MI GDRPMIBL57Z  348      
269-216 2 Kalamazoo MI GDRPMIBL57Z  348      
269-398 A Three Oaks MI GDRPMIBL57Z  348      
269-398 9 Three Oaks MI GDRPMIBL57Z  348   2022-10-21   
269-769 A St Joseph MI GDRPMIBLX6Z  348      
269-769 9 St Joseph MI GDRPMIBLX6Z  348      
272-262 A Bushkill PA SCTNPA01XXX  232      
272-262 9 Bushkill PA SCTNPA01XXX  232   2021-07-06   
281-201 A Sugar Land TX HSTNTX01DS2  560      
281-201 9 Sugar Land TX HSTNTX01DS2  560      
281-206 A Barker TX HSTNTX01DS2  560      
281-206 9 Barker TX HSTNTX01DS2  560      
281-248 A Bammel TX HSTNTX01DS2  560      
281-248 0 Bammel TX HSTNTX01DS2  560      
281-310 A Houston Suburban TX HSTNTX01DS2  560      
281-310 2 Houston Suburban TX HSTNTX01DS2  560      
281-310 3 Houston Suburban TX HSTNTX01DS2  560      
281-310 9 Houston Suburban TX HSTNTX01DS2  560      
281-466 5 Spring EMS TX HSTNTX01DS2  560   2002-10-08   
281-645 7 Westfield TX HSTNTX01DS2  560   2002-03-13   
281-817 3 Deer Park TX HSTNTX01DS2  560   2002-01-18   
301-825 A Washington Zone 10 MD WASHDCSWDS8  236      
301-825 0 Washington Zone 10 MD WASHDCSWDS8  236      
303-923 4 Denver CO DNVRCOZJNMD  656   2002-04-30   
307-412 A Cheyenne WY CHYNWYMAXSX  654      
307-412 9 Cheyenne WY CHYNWYMAXSX  654   2022-11-07   
308-258 A Grand Island NE GDISNEAS3MD  646      
308-258 9 Grand Island NE GDISNEAS3MD  646      
309-222 A Peoria IL PEORILPJ0MD  368      
309-222 9 Peoria IL PEORILPJ0MD  368      
309-229 A Peoria IL PEORILPJ0MD  368      
309-229 2 Peoria IL PEORILPJ0MD  368      
309-229 5 Peoria IL PEORILPJ0MD  368      
309-951 A Danvers IL BLTNILATX6X  366   2024-02-27  2026-06-13 
310-981 1 Inglewood CA GRDNCA02DS3  730      
312-239 A Chicago Zone 01-Canal IL CHCGILCLDS9  358      
312-239 4 Chicago Zone 01-Canal IL CHCGILCLDS9  358      
312-239 5 Chicago Zone 01-Canal IL CHCGILCLDS9  358      
312-239 9 Chicago Zone 01-Canal IL CHCGILCLDS9  358      

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Last updated: Sun, 17 May 2026 03:26:51 UTC

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