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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Switch: JFSNNHYARS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
603-586 A Jefferson NH 5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-586 4 Jefferson NH 5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-586 7 Jefferson NH 5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-586 9 Jefferson NH 5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122   2014-06-20   

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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