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: 835 [Rate centres in NPA 835] [Dial plan for NPA 835]

NXX: 221

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
835-221 A Pottstown PA WNRTPAAHCMA  6626 OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 228      
835-221 0 Pottstown PA   547E ONVOY, LLC - PA 228   2023-11-04   
835-221 1 Pottstown PA   547E ONVOY, LLC - PA 228   2023-11-04   
835-221 2 Pottstown PA   547E ONVOY, LLC - PA 228   2023-11-04   
835-221 6 Pottstown PA   145J TERRA NOVA TELECOM INC. 228   2025-10-05   
835-221 8 Pottstown PA   6392 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - PA 228   2025-12-26   
835-221 9 Pottstown PA   6626 OMNIPOINT COMMUNICATIONS ENTERPRISES, LP 228   2023-09-23   

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.