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: 779

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
609-779 A Plainsboro NJ   829J PAETEC ITEL, LLC 222   2025-05-14   
609-779 0 Plainsboro NJ   3639 MONMOUTH TELEPHONE AND TELEGRAPH, INC. - NJ 222   2008-09-08   
609-779 1 Plainsboro NJ   118F BANDWIDTH.COM CLEC, LLC - NJ 222   2014-05-09   
609-779 2 Plainsboro NJ   118F BANDWIDTH.COM CLEC, LLC - NJ 222   2015-06-12   
609-779 3 Plainsboro NJ   829J PAETEC ITEL, LLC 222   2014-11-07   
609-779 4 Plainsboro NJ   835E BLOCK LINE SYSTEMS, LLC - NJ 222   2009-12-07   
609-779 5 Plainsboro NJ   829J PAETEC ITEL, LLC 222   2016-09-29   
609-779 6 Plainsboro NJ   829J PAETEC ITEL, LLC 222      
609-779 7 Plainsboro NJ   508J CENTURYLINK COMMUNICATIONS, LLC 222   2014-03-13   
609-779 8 Plainsboro NJ   515J IP HORIZON LLC 222   2015-03-23   

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.