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: 239

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-239 A Winchester NH WNCHNHMIRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-239 0 Winchester NH MNCHNHCOX9Y  4286 LIGHTSHIP TELECOM, LLC - NH 122      
603-239 1 Winchester NH MNCHNHCOXMX  4206 PAETEC COMMUNICATIONS, INC. - NH 122      
603-239 2 Winchester NH MNCHNHCOXCZ  996E BANDWIDTH.COM CLEC, LLC - NH 122      
603-239 3 Winchester NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122      
603-239 4 Winchester NH WNCHNHMIRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-239 6 Winchester NH WNCHNHMIRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-239 7 Winchester NH WNCHNHMIRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-239 8 Winchester NH WNCHNHMIRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-239 9 Winchester NH WNCHNHMIRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.