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.

Dublin, NH

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
603-563 A DBLNNHMORS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-563 0 MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2004-09-04   
603-563 1   829J PAETEC ITEL, LLC 122   2005-07-23   
603-563 3   793K TWC IP ENABLED SERVICES, LLC 122   2025-04-20   
603-563 5   145J TERRA NOVA TELECOM INC. 122   2022-10-06   
603-563 7 DBLNNHMORS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-563 8 DBLNNHMORS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-563 9 DBLNNHMORS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.