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.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

NPA: 603 [Rate centres in NPA 603] [Dial plan for NPA 603]

NXX: 919

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-919 A Rochester NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-919 0 Rochester NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2023-08-19   
603-919 1 Rochester NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2023-08-20   
603-919 2 Rochester NH   6386 BELL ATLANTIC MOBILE, INC 122   2024-05-15   
603-919 7 Rochester NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2023-11-25   
603-919 8 Rochester NH MNCHNHCO23Z  073H TELNYX LLC 122   2023-10-16   
603-919 9 Rochester NH MNCHNHBODS0  927H PEERLESS NETWORK OF NEW HAMPSHIRE, LLC - NH 122   2023-08-21   

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.