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.
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OCN: 7421 AT&T - LOCAL

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
402-516 7 Omaha NE   644      
402-516 9 Omaha NE   644      
402-517 A Omaha NE OMAHNENWDS5  644      
402-517 3 Omaha NE   644      
402-517 4 Omaha NE   644      
402-517 9 Omaha NE   644      
402-861 3 Omaha NE   644   2011-02-14   
404-348 A Atlanta GA ATLNGATLDS4  438      
404-348 1 Atlanta GA   438      
404-348 5 Atlanta GA   438      
404-348 9 Atlanta GA   438      
404-516 A Atlanta GA ATLNGATLDS6  438      
404-516 9 Atlanta GA   438      
404-704 A Atlanta GA ATLNGABU20Z  438      
404-704 1 Atlanta GA   438      
406-625 A Stevensville MT MSSLMTMAX0X  648   2024-02-23   
406-625 9 Stevensville MT   648   2024-02-24   
406-815 A Red Lodge MT BLNGMTMAX5X  650      
406-815 9 Red Lodge MT   650   2022-03-08   
406-997 A Fromberg MT BLNGMTWEMMD  650   2024-03-09   
406-997 9 Fromberg MT   650   2024-03-09   
408-755 4 San Jose: West DA CA   722   2011-08-01   
408-916 A San Jose: West DA CA SNJSCA02DS3  722      
408-916 0 San Jose: West DA CA   722      
408-916 2 San Jose: West DA CA   722      
408-916 9 San Jose: West DA CA   722      
412-315 A Pittsburgh Zone 1 PA PITBPADGDS5  234      
412-315 2 Pittsburgh Zone 1 PA   234   2011-03-18   
412-518 3 Pittsburgh Zone 1 PA   234   2010-01-04   
412-518 4 Pittsburgh Zone 1 PA   234   2010-01-04   
412-631 A Pittsburgh Suburban Zone 15 PA PITBPADGDS5  234      
412-631 1 Pittsburgh Suburban Zone 15 PA   234      
412-776 A Pittsburgh Suburban Zone 15 PA PITBPADGDS5  234      
412-776 9 Pittsburgh Suburban Zone 15 PA   234      
412-992 A Pittsburgh Zone 1 PA PITBPADGDS5  234      
412-992 2 Pittsburgh Zone 1 PA   234      
412-992 5 Pittsburgh Zone 1 PA   234      
413-213 A Belchertown MA SPFDMABRXBX  126      
413-213 9 Belchertown MA   126   2003-12-07   
413-307 A Adams MA SPFDMAWOPMD  126      
413-307 9 Adams MA   126   2012-08-20   
415-223 6 San Rafael CA   722   2002-10-27   
415-324 3 Sausalito CA   722   2003-02-04   
415-486 A San Francisco: Central DA CA SNFCCA01DS5  722      
415-692 A San Francisco: Central DA CA SNFCCA01DS5  722      
415-692 2 San Francisco: Central DA CA   722      
415-692 9 San Francisco: Central DA CA   722      
417-208 A Joplin MO SPFDMOTLXRY  522      
417-208 1 Joplin MO   522      
417-480 A Ash Grove MO SPFDMOTLXRY  522      

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Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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