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.

Switch: MNCHNHCOX4Z

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
603-455 5 Laconia NH 6290 UNITED STATES CELLULAR - NH 122      
603-455 6 Laconia NH 6290 UNITED STATES CELLULAR - NH 122      
603-455 7 Laconia NH 6290 UNITED STATES CELLULAR - NH 122      
603-455 8 Laconia NH 6290 UNITED STATES CELLULAR - NH 122      
603-455 9 Laconia NH 6290 UNITED STATES CELLULAR - NH 122      
603-461 A Merrimack NH 6290 UNITED STATES CELLULAR - NH 122      
603-461 2 Merrimack NH 6290 UNITED STATES CELLULAR - NH 122      
603-461 6 Merrimack NH 6290 UNITED STATES CELLULAR - NH 122      
603-464 9 Hillsboro NH 6290 UNITED STATES CELLULAR - NH 122   2004-07-27   
603-470 A Concord NH 6290 UNITED STATES CELLULAR - NH 122      
603-470 3 Concord NH 6290 UNITED STATES CELLULAR - NH 122      
603-470 4 Concord NH 6290 UNITED STATES CELLULAR - NH 122      
603-470 5 Concord NH 6290 UNITED STATES CELLULAR - NH 122      
603-470 6 Concord NH 6290 UNITED STATES CELLULAR - NH 122      
603-470 7 Concord NH 6290 UNITED STATES CELLULAR - NH 122      
603-470 8 Concord NH 6290 UNITED STATES CELLULAR - NH 122      
603-470 9 Concord NH 6290 UNITED STATES CELLULAR - NH 122      
603-477 A Claremont NH 6290 UNITED STATES CELLULAR - NH 122      
603-477 0 Claremont NH 6290 UNITED STATES CELLULAR - NH 122      
603-477 1 Claremont NH 6290 UNITED STATES CELLULAR - NH 122      
603-477 2 Claremont NH 6290 UNITED STATES CELLULAR - NH 122      
603-477 3 Claremont NH 6290 UNITED STATES CELLULAR - NH 122      
603-477 4 Claremont NH 6290 UNITED STATES CELLULAR - NH 122      
603-477 5 Claremont NH 6290 UNITED STATES CELLULAR - NH 122      
603-477 6 Claremont NH 6290 UNITED STATES CELLULAR - NH 122      
603-477 7 Claremont NH 6290 UNITED STATES CELLULAR - NH 122      
603-477 8 Claremont NH 6290 UNITED STATES CELLULAR - NH 122      
603-477 9 Claremont NH 6290 UNITED STATES CELLULAR - NH 122      
603-486 A Manchester NH 6290 UNITED STATES CELLULAR - NH 122      
603-486 2 Manchester NH 6290 UNITED STATES CELLULAR - NH 122      
603-486 3 Manchester NH 6290 UNITED STATES CELLULAR - NH 122      
603-486 4 Manchester NH 6290 UNITED STATES CELLULAR - NH 122      
603-486 5 Manchester NH 6290 UNITED STATES CELLULAR - NH 122      
603-486 6 Manchester NH 6290 UNITED STATES CELLULAR - NH 122      
603-486 7 Manchester NH 6290 UNITED STATES CELLULAR - NH 122      
603-486 8 Manchester NH 6290 UNITED STATES CELLULAR - NH 122      
603-486 9 Manchester NH 6290 UNITED STATES CELLULAR - NH 122      
603-499 0 Keene NH 6290 UNITED STATES CELLULAR - NH 122   2003-12-30   
603-499 1 Keene NH 6290 UNITED STATES CELLULAR - NH 122   2003-12-30   
603-499 2 Keene NH 6290 UNITED STATES CELLULAR - NH 122   2003-12-30   
603-499 3 Keene NH 6290 UNITED STATES CELLULAR - NH 122   2003-12-30   
603-499 5 Keene NH 6290 UNITED STATES CELLULAR - NH 122   2003-12-30   
603-499 6 Keene NH 6290 UNITED STATES CELLULAR - NH 122   2003-12-30   
603-504 A Claremont NH 6290 UNITED STATES CELLULAR - NH 122      
603-504 7 Claremont NH 6290 UNITED STATES CELLULAR - NH 122      
603-504 8 Claremont NH 6290 UNITED STATES CELLULAR - NH 122      
603-504 9 Claremont NH 6290 UNITED STATES CELLULAR - NH 122   2020-04-10   
603-533 A Merrimack NH 6290 UNITED STATES CELLULAR - NH 122      
603-533 0 Merrimack NH 6290 UNITED STATES CELLULAR - NH 122      
603-533 1 Merrimack NH 6290 UNITED STATES CELLULAR - NH 122      

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Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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