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: 570 [Rate centres in NPA 570] [Dial plan for NPA 570]

NXX: 515

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
570-515 A Montgomery PA MTGMPAXEPS0  0176 WINDSTREAM PENNSYLVANIA, INC. 232      
570-515 0 Montgomery PA   318J COMCAST IP PHONE, LLC 232      
570-515 1 Montgomery PA   5562 METROPCS, INC. 232   2016-10-15   
570-515 2 Montgomery PA   4007 LEVEL 3 COMMUNICATIONS, LLC - PA 232   2019-02-11   
570-515 3 Montgomery PA   5562 METROPCS, INC. 232   2023-04-03   
570-515 4 Montgomery PA   0176 WINDSTREAM PENNSYLVANIA, INC. 232   2012-03-27   
570-515 5 Montgomery PA   547E ONVOY, LLC - PA 232   2020-10-24   
570-515 6 Montgomery PA   547E ONVOY, LLC - PA 232   2021-04-19   
570-515 7 Montgomery PA   547E ONVOY, LLC - PA 232   2021-04-19   
570-515 9 Montgomery PA   145J TERRA NOVA TELECOM INC. 232   2025-08-01   

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.