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: 413

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-413 A Manchester NH MNCHNHCOXMX  4206 PAETEC COMMUNICATIONS, INC. - NH 122   2024-01-09   
603-413 0 Manchester NH MNCHNHCOXCZ  996E BANDWIDTH.COM CLEC, LLC - NH 122      
603-413 1 Manchester NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-413 2 Manchester NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122      
603-413 3 Manchester NH MNCHNHCOXCZ  996E BANDWIDTH.COM CLEC, LLC - NH 122      
603-413 4 Manchester NH MNCHNHCOXCZ  996E BANDWIDTH.COM CLEC, LLC - NH 122      
603-413 5 Manchester NH MNCHNHCOXMX  4206 PAETEC COMMUNICATIONS, INC. - NH 122      
603-413 6 Manchester NH MNCHNHCOXMX  4206 PAETEC COMMUNICATIONS, INC. - NH 122      
603-413 7 Manchester NH MNCHNHCOXAZ  4206 PAETEC COMMUNICATIONS, INC. - NH 122      
603-413 8 Manchester NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122      
603-413 9 Manchester NH DOVRNHTHGMD  624H ONVOY SPECTRUM, LLC 122      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.