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: 691

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-691 A Exeter NH MNCHNHNIVMD  939H COMMIO, LLC 122      
603-691 0 Exeter NH MNCHNHCO23Z  073H TELNYX LLC 122   2022-11-14   
603-691 1 Exeter NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2022-11-13   
603-691 2 Exeter NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2022-11-13   
603-691 3 Exeter NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2022-12-23   
603-691 4 Exeter NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2023-04-14   
603-691 5 Exeter NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2023-07-06   
603-691 6 Exeter NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2023-08-20   
603-691 7 Exeter NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2023-12-28   
603-691 8 Exeter NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2023-04-07   
603-691 9 Exeter NH MNCHNHNIVMD  939H COMMIO, LLC 122   2023-04-07   

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

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.