Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Switch: ANTRNHXARP0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
603-588 A Antrim NH 3320 MERRIMACK CO. TELEPHONE CO., DBA CONTOOCOOK VALLEY 122      
603-588 0 Antrim NH 3320 MERRIMACK CO. TELEPHONE CO., DBA CONTOOCOOK VALLEY 122      
603-588 2 Antrim NH 3320 MERRIMACK CO. TELEPHONE CO., DBA CONTOOCOOK VALLEY 122      
603-588 3 Antrim NH 3320 MERRIMACK CO. TELEPHONE CO., DBA CONTOOCOOK VALLEY 122      
603-588 4 Antrim NH 3320 MERRIMACK CO. TELEPHONE CO., DBA CONTOOCOOK VALLEY 122      
603-588 6 Antrim NH 3320 MERRIMACK CO. TELEPHONE CO., DBA CONTOOCOOK VALLEY 122      
603-588 8 Antrim NH 3320 MERRIMACK CO. TELEPHONE CO., DBA CONTOOCOOK VALLEY 122      

Last updated: Wed, 04 Mar 2026 03:00:52 UTC

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