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: 685

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-685 A Salem NH NASHNH08AMD  4053 CONVERSENT COMMUNICATIONS OF NEW HAMPSHIRE, LLC 122      
603-685 0 Salem NH NASHNH08AMD  4053 CONVERSENT COMMUNICATIONS OF NEW HAMPSHIRE, LLC 122   2003-03-13   
603-685 1 Salem NH DOVRNHTHGMD  624H ONVOY SPECTRUM, LLC 122   2020-07-03   
603-685 2 Salem NH MNCHNHCOX9Y  2698 CTC COMMUNICATIONS CORP. - NH 122   2002-08-21   
603-685 3 Salem NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2005-04-03   
603-685 4 Salem NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2005-04-03   
603-685 5 Salem NH DOVRNHTHGMD  624H ONVOY SPECTRUM, LLC 122   2020-07-03   
603-685 6 Salem NH NASHNH08AMD  4053 CONVERSENT COMMUNICATIONS OF NEW HAMPSHIRE, LLC 122      
603-685 7 Salem NH DOVRNHTHGMD  624H ONVOY SPECTRUM, LLC 122   2020-07-03   
603-685 8 Salem NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2019-03-20   
603-685 9 Salem NH DOVRNHTHGMD  624H ONVOY SPECTRUM, LLC 122   2022-01-07   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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