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: 610 [Rate centres in NPA 610] [Dial plan for NPA 610]

NXX: 472

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
610-472 A Philadelphia Suburban Zone 17 PA FTWSPAFWX2X  7309 TELEPORT COMMUNICATIONS AMERICA, LLC - PA 228      
610-472 0 Philadelphia Suburban Zone 17 PA PHLAPAFGD2S  547E ONVOY, LLC - PA 228   2023-02-05   
610-472 1 Philadelphia Suburban Zone 17 PA PHLAPAFGD2S  547E ONVOY, LLC - PA 228   2023-02-05   
610-472 6 Philadelphia Suburban Zone 17 PA FTWSPAFWX2X  7309 TELEPORT COMMUNICATIONS AMERICA, LLC - PA 228   2022-02-07   
610-472 7 Philadelphia Suburban Zone 17 PA PHLAPAFGD2S  547E ONVOY, LLC - PA 228   2022-12-12   
610-472 8 Philadelphia Suburban Zone 17 PA PHLAPAFGD2S  547E ONVOY, LLC - PA 228   2022-12-12   
610-472 9 Philadelphia Suburban Zone 17 PA PHLAPAFGD2S  547E ONVOY, LLC - PA 228   2022-12-12   

Last updated: Sat, 01 Aug 2026 03:19:33 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.