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: 978 [Rate centres in NPA 978] [Dial plan for NPA 978]

NXX: 485

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
978-485 A Salem MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128   2025-04-11   
978-485 0 Salem MA   4018 LEVEL 3 COMMUNICATIONS, LLC - MA 128      
978-485 2 Salem MA   892D ONVOY, LLC - MA 128   2023-02-18   
978-485 3 Salem MA   829J PAETEC ITEL, LLC 128   2007-04-28   
978-485 4 Salem MA   892D ONVOY, LLC - MA 128   2023-05-07   
978-485 5 Salem MA   7619 RCN TELECOM SERVICES, INC. - MA 128   2019-08-22   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.