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: 712

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
856-712 A Elmer NJ   829J PAETEC ITEL, LLC 222   2025-05-14   
856-712 0 Elmer NJ LRSPNJLSFMD  118F BANDWIDTH.COM CLEC, LLC - NJ 222   2008-12-04   
856-712 1 Elmer NJ CMDNNJCEX8Z  637C ONVOY, LLC - NJ 222   2014-07-06   
856-712 2 Elmer NJ CMDNNJCE58Z  318J COMCAST IP PHONE, LLC 222   2014-01-06   
856-712 3 Elmer NJ CMDNNJCEX5Z  7134 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NJ 222   2008-07-01   
856-712 4 Elmer NJ CMDNNJCEXAZ  835E BLOCK LINE SYSTEMS, LLC - NJ 222   2009-10-03   
856-712 5 Elmer NJ LRSPNJLSFMD  118F BANDWIDTH.COM CLEC, LLC - NJ 222   2015-11-07   
856-712 6 Elmer NJ   829J PAETEC ITEL, LLC 222      
856-712 7 Elmer NJ   829J PAETEC ITEL, LLC 222   2012-02-10   
856-712 8 Elmer NJ CMDNNJCEX8Z  637C ONVOY, LLC - NJ 222   2016-03-07   
856-712 9 Elmer NJ CMDNNJCEX8Z  637C ONVOY, LLC - NJ 222   2016-03-07   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.