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: 609 [Rate centres in NPA 609] [Dial plan for NPA 609]

NXX: 574

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
609-574 A Pennington NJ CMDNNJCE18Z  7310 TELEPORT COMMUNICATIONS AMERICA, LLC - NJ 222   2024-04-14   
609-574 0 Pennington NJ CMDNNJCEX8Z  637C ONVOY, LLC - NJ 222   2024-04-15   
609-574 1 Pennington NJ CMDNNJCEX8Z  637C ONVOY, LLC - NJ 222   2024-07-08   
609-574 4 Pennington NJ CMDNNJCE18Z  7310 TELEPORT COMMUNICATIONS AMERICA, LLC - NJ 222   2024-04-14   
609-574 5 Pennington NJ CMDNNJCE18Z  7310 TELEPORT COMMUNICATIONS AMERICA, LLC - NJ 222   2024-04-14   
609-574 6 Pennington NJ CMDNNJCE18Z  7310 TELEPORT COMMUNICATIONS AMERICA, LLC - NJ 222   2024-04-14   
609-574 7 Pennington NJ   114J EXIANT COMMUNICATIONS LLC 222   2026-08-13   
609-574 8 Pennington NJ CMDNNJCEX8Z  637C ONVOY, LLC - NJ 222   2026-05-31   

Last updated: Tue, 01 Sep 2026 00:40:05 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.