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: 856 [Rate centres in NPA 856] [Dial plan for NPA 856]

NXX: 740

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
856-740 A Williamstown NJ WLTWNJ02DS5  9206 VERIZON NEW JERSEY, INC. 222      
856-740 0 Williamstown NJ   9206 VERIZON NEW JERSEY, INC. 222      
856-740 1 Williamstown NJ   9206 VERIZON NEW JERSEY, INC. 222      
856-740 2 Williamstown NJ   9206 VERIZON NEW JERSEY, INC. 222      
856-740 3 Williamstown NJ   9206 VERIZON NEW JERSEY, INC. 222      
856-740 4 Williamstown NJ   9206 VERIZON NEW JERSEY, INC. 222      
856-740 5 Williamstown NJ   9206 VERIZON NEW JERSEY, INC. 222      
856-740 6 Williamstown NJ   9206 VERIZON NEW JERSEY, INC. 222      
856-740 7 Williamstown NJ   637C ONVOY, LLC - NJ 222   2014-09-05   
856-740 8 Williamstown NJ   9206 VERIZON NEW JERSEY, INC. 222      
856-740 9 Williamstown NJ   9206 VERIZON NEW JERSEY, INC. 222      

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

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.