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: 803

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-803 A Keene NH MNCHNHCO16Z  508J CENTURYLINK COMMUNICATIONS, LLC 122      
603-803 0 Keene NH   6889 OMNIPOINT MIAMI E LICENSE, LLC 122   2021-12-31   
603-803 1 Keene NH   6386 BELL ATLANTIC MOBILE, INC 122   2017-08-24   
603-803 2 Keene NH   6386 BELL ATLANTIC MOBILE, INC 122   2018-11-15   
603-803 3 Keene NH   996E BANDWIDTH.COM CLEC, LLC - NH 122   2019-09-02   
603-803 4 Keene NH   637E ONVOY, LLC - NH 122   2022-09-29   
603-803 5 Keene NH   637E ONVOY, LLC - NH 122   2021-08-02   
603-803 6 Keene NH   637E ONVOY, LLC - NH 122   2022-09-29   
603-803 7 Keene NH   508J CENTURYLINK COMMUNICATIONS, LLC 122   2016-12-17   
603-803 8 Keene NH   6386 BELL ATLANTIC MOBILE, INC 122   2020-05-02   
603-803 9 Keene NH   996E BANDWIDTH.COM CLEC, LLC - NH 122   2022-08-14   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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