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: NBTNNHHPRS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
603-487 A New Boston NH 5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-487 2 New Boston NH 5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-487 3 New Boston NH 5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-487 5 New Boston NH 5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-487 9 New Boston NH 5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122   2014-06-21   

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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