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: 310

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
570-310 A Dallas PA WLBRPA04GT0  3806 CORE COMMUNICATIONS, INC. - PA 232      
570-310 0 Dallas PA WLBRPA04GT0  3806 CORE COMMUNICATIONS, INC. - PA 232      
570-310 1 Dallas PA SCTNPASCXMZ  318J COMCAST IP PHONE, LLC 232      
570-310 2 Dallas PA BEWKPA16PS0  213C IDT AMERICA, CORP. - PA 232      
570-310 3 Dallas PA   3806 CORE COMMUNICATIONS, INC. - PA 232      
570-310 4 Dallas PA   3806 CORE COMMUNICATIONS, INC. - PA 232      
570-310 5 Dallas PA   3806 CORE COMMUNICATIONS, INC. - PA 232      
570-310 6 Dallas PA SCTNPASCXGY  7309 TELEPORT COMMUNICATIONS AMERICA, LLC - PA 232      
570-310 7 Dallas PA SCTNPASCX8Z  508J CENTURYLINK COMMUNICATIONS, LLC 232      
570-310 8 Dallas PA   3806 CORE COMMUNICATIONS, INC. - PA 232      
570-310 9 Dallas PA   3806 CORE COMMUNICATIONS, INC. - PA 232      

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.