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: 573F TOPSHAM COMMUNICATIONS, LLC

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
603-360 A Orford NH MNCHNHCOXMZ  122      
603-360 1 Orford NH   122   2010-07-27   
802-331 A Fairlee VT ECRNVTXADS1  124      
802-331 1 Fairlee VT   124   2010-07-20   
802-449 8 Bradford VT   124   2010-07-20   
802-575 A Groton VT ECRNVTXADS1  124      
802-575 1 Groton VT   124   2014-04-24   

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

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