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: 717 [Rate centres in NPA 717] [Dial plan for NPA 717]

NXX: 220

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
717-220 A Hummelstown PA LITZPAXEDS1  4114 WINDSTREAM D & E SYSTEMS, INC. - PA 226      
717-220 0 Hummelstown PA HRBGPAHAXCY  4007 LEVEL 3 COMMUNICATIONS, LLC - PA 226   2006-09-07   
717-220 1 Hummelstown PA HRBGPAHAXTX  318J COMCAST IP PHONE, LLC 226   2006-07-16   
717-220 2 Hummelstown PA LITZPAXEDS1  4114 WINDSTREAM D & E SYSTEMS, INC. - PA 226      
717-220 3 Hummelstown PA HRBGPAHAXAZ  002F BANDWIDTH.COM CLEC, LLC - PA 226   2011-12-30   
717-220 4 Hummelstown PA HRBGPAHAXCY  4007 LEVEL 3 COMMUNICATIONS, LLC - PA 226   2005-04-07   
717-220 5 Hummelstown PA HRBGPAHAXAZ  002F BANDWIDTH.COM CLEC, LLC - PA 226   2012-09-14   
717-220 6 Hummelstown PA HRBGPAHAXSX  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 226   2007-03-12   
717-220 7 Hummelstown PA HRBGPAHAXRY  7434 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - PA 226   2008-10-30   
717-220 8 Hummelstown PA HRBGPAHAXAZ  002F BANDWIDTH.COM CLEC, LLC - PA 226   2018-08-18   
717-220 9 Hummelstown PA   3806 CORE COMMUNICATIONS, INC. - PA 226   2009-03-24   

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.