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: NWDRNHXARP0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
603-859 A New Durham NH 0049 UNION TEL. CO. 122      
603-859 0 New Durham NH 0049 UNION TEL. CO. 122      
603-859 2 New Durham NH 0049 UNION TEL. CO. 122      
603-859 4 New Durham NH 0049 UNION TEL. CO. 122      
603-859 9 New Durham NH 0049 UNION TEL. CO. 122      

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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