Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 603 [Rate centres in NPA 603] [Dial plan for NPA 603]

NXX: 681

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-681 A Salem NH   829J PAETEC ITEL, LLC 122   2025-04-30   
603-681 0 Salem NH   829J PAETEC ITEL, LLC 122      
603-681 1 Salem NH   829J PAETEC ITEL, LLC 122      
603-681 2 Salem NH   829J PAETEC ITEL, LLC 122      
603-681 3 Salem NH   829J PAETEC ITEL, LLC 122   2006-03-14   
603-681 4 Salem NH MNCHNHCOX1Y  8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH 122   2002-10-26   
603-681 5 Salem NH DOVRNHTHGMD  624H ONVOY SPECTRUM, LLC 122   2022-01-07   
603-681 6 Salem NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2021-05-07   
603-681 7 Salem NH DOVRNHTHGMD  624H ONVOY SPECTRUM, LLC 122   2022-01-07   
603-681 8 Salem NH DOVRNHTHGMD  624H ONVOY SPECTRUM, LLC 122   2022-01-07   
603-681 9 Salem NH   829J PAETEC ITEL, LLC 122      

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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