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: 404

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
856-404 A Williamstown NJ CMDNNJCE1MD  1958 ATX TELECOMMUNICATIONS SERVICES, LTD. 222      
856-404 0 Williamstown NJ CMDNNJCE59Z  6391 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 222      
856-404 1 Williamstown NJ CMDNNJCE59Z  6391 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 222      
856-404 2 Williamstown NJ CMDNNJCE59Z  6391 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 222      
856-404 3 Williamstown NJ CMDNNJCE59Z  6391 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 222      
856-404 4 Williamstown NJ CMDNNJCE59Z  6391 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 222      
856-404 5 Williamstown NJ CMDNNJCE59Z  6391 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 222      
856-404 6 Williamstown NJ CMDNNJCE1MD  1958 ATX TELECOMMUNICATIONS SERVICES, LTD. 222      
856-404 7 Williamstown NJ CMDNNJCE59Z  6391 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 222      
856-404 8 Williamstown NJ CMDNNJCE59Z  6391 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NJ 222      
856-404 9 Williamstown NJ CMDNNJCE58Z  318J COMCAST IP PHONE, LLC 222      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.