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: DOVRNHTHXMX

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
603-473 7 Milton Mills NH 793K TWC IP ENABLED SERVICES, LLC 122   2012-10-02   
603-515 7 Wolfeboro NH 793K TWC IP ENABLED SERVICES, LLC 122   2012-10-02   
603-544 5 Melvin Village NH 793K TWC IP ENABLED SERVICES, LLC 122   2018-05-21   
603-839 A Farmington NH 793K TWC IP ENABLED SERVICES, LLC 122      
603-839 9 Farmington NH 793K TWC IP ENABLED SERVICES, LLC 122   2012-10-02   
603-871 8 Sanbornville NH 793K TWC IP ENABLED SERVICES, LLC 122   2012-10-02   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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